TYPHON Lipo with Bronto LiPo-Safe at Elefun.no

Our TYPHON Super Lipo Power with Bronto Lipo-Safe.

If you are in Norway, please stop by
http://www.elefun.no/p/prod.aspx?v=29919
http://www.elefun.no/p/prod.aspx?v=31618
http://www.elefun.no/p/prod.aspx?v=32537

If not,  check our website:www.firedragon-power.com to see our all kinds of lipo battery.

RC Battery Safety to Use

Lithium Polymer Safety Tips: Lithium Polymer cells are a tremendous advance in battery technology for RC use. However, due to the chemistry of lithium cells, there is a possibility of fire if charging is not properly done. It is unavoidable due to the nature of lithium itself. This is no different from many things we use in daily life – knives, kitchen cleaners, automobiles, for a few examples – which are inherently dangerous, but which can be used safely by adhering to simple rules and precautions.

• Batteries should NEVER be left unattended while charging.
• Be absolutely sure that the Lithium Polymer charger settings are correct for the battery pack being charged – both voltage and current settings.
• Lithium Polymer must be CHARGED and STORED in a fire-safe container like a Lipo Sack.
• Do not charge batteries near flammable items or liquids.
• Keep a dry fire extinguisher nearby or a large bucket of dry sand, which is a cheap and effective extinguisher.
• Never charge inside an automobile even when parked.
• KEEP BATTERIES AWAY from children and pets at ALL times.

 Connection: Be sure that the correct polarity is observed when connecting battery packs to charger or ESC.

POSITIVE (+)            NEGATIVE (-)

Charging/Discharging: Your new battery will arrive half charged.  Charge your pack fully before first use.  Charge your LiPo battery pack at 5C or less on the LiPo setting only.  You must use a balance charging system, otherwise, you risk your pack becoming severely out of balance over time, which will significantly decrease the lifespan.

Do NOT charge your LiPo packs on a NIMH/NICD charger. Your charger must be designed for LiPo cells. Do not charge above 4.2V per cell, over discharge under 3V per cell. Never leave LiPo packs unattended during charging or after a crash in your vehicle. Don’t leave the battery pack plugged into a vehicle while not in use. The pack can still discharge to an unsafe level and damage the pack even if all components are turned off.

It is dangerous to draw more power than what the pack is rated for.  This will void any warranty on the pack and can also cause your battery pack to ignite into flames.  The temperature of the pack should never exceed 140F degrees.  If it does, you may need a pack that is rated to handle more power.

Storage Procedure: When not using your LiPo/Life battery pack, store it at 50% of the pack’s rated capacity.  Make sure to cycle your packs at least once per month since leaving them on the shelf for a prolonged period of time can cause the packs to get severely out of balance, puff/swell or even go dead.

Handling Cautions:

• Never leave batteries inside a car on a hot day or any other place where temperature may exceed 140F / 60C.
• Although environmentally friendly, lithium polymer cells must be FULLY discharged before disposal. Use a resistor setup (light bulbs, for example) to accomplish this, to avoid the possibility of a short-induced fire after disposal.
• Immediately discharge damaged batteries at 1/2 C rate and dispose.
• Do not put the loose cells in a pocket, bag, or drawer where they could short-circuit against other items, or the battery tabs could be pressed against each other.
• Do not place the loose cells on any conductive surface, such as a metal-topped table.
• We recommend purchasing pre-assembled packs rather than assembling packs from loose cells.
• Take care that the cells are not punctured, especially by metallic objects like hobby knives.
• If the electrolyte in the cells should get on your skin, thoroughly wash with soap and water. If in the eyes, rinse thoroughly with cool water. Immediately seek medical attention for this, or for burns.
• Although our batteries are now water sealed, we do not recommend submerging our batteries for extended periods of time. The battery packs will be protected during normal rc conditions.

All Lithium Polymer Batteries we carry are only approved for rc use, and may not be used in any other application. Battery discharging, charging, electric motors, spinning propellers, and flying models all have the potential for serious injury to persons and damage to property. In purchasing these products, the user agrees to accept responsibility for all such risks, and not to hold the battery manufacturer, distributors, or retailers - (all including owners and employees) -responsible for any accident, injury to persons, or damage to property.

The use of Lithium Polymer batteries in radio-controlled models is to be considered experimental, and there is no warranty, expressed or implied, by the manufacturer, distributors, or retailers with respect to the capacity, life in cycles, storage, or discharge characteristics of lithium cells in RC use, nor any other use nor aspect unless otherwise stated.

Do not, under any circumstances, attempt to “heat up” your batteries or increase the voltage of a pack above 4.2V per cell using these devices or techniques. Some insidious lithium polymer retailers/distributors have suggested using these devices and techniques to increase the performance of your lithium polymer packs. THIS IS NOT SAFE AND IS LITERALLY PLAYING WITH FIRE!

Devices on the market that heat up lithium polymer batteries can increase the risk of a fire. Lithium polymer cell manufacturers suggest that exceeding 140 degrees is NOT a safe temperature for a lithium polymer cell. At 140 degrees, the pack can become unstable and very dangerous. The small increase in performance is not worth the risk of a fire. PLEASE STAY SMART AND SAFE BY NOT USING THESE PRODUCTS!

Some retailers/distributors of other brands of lithium polymer batteries have suggested that their customers and racers “bump” the voltage of their packs using settings other than the lithium polymer setting on their charger. The manufacturers of lithium polymer cells suggest a voltage range of 3V-4.2V. Increasing voltage above 4.2V per cell is not safe. You should never attempt to charge your packs beyond the voltage set for lithium polymer packs on your lithium polymer charger. Using other battery settings to “bump” the voltage beyond 4.2V per cell can cause fire and injury. The small increase in performance is not worth the risk of fire. PLEASE DO NOT USE THESE METHODS!

Polymer Lithium Batteries will explode it?

Lithium batteries "safe" is always an important issue of troubled lithium battery industry. In recent years, exposure of battery explosion without exception are caused by the use of lithium batteries, talking about causes of the explosion, compared with other types of batteries, This is due to the special nature of the lithium battery materials and technology decisions. To do this, you should understand the knowledge of lithium battery exploding, we try to be explained in the following three aspects.

First, what is the battery explode?

Stipulated by national standard, the moment of solid material ejected within any part of the battery was pushed to the lithium batteries over a distance of 25cm,called the explosion. Experiments found is: a circular mesh covering the experimental battery and place battery in the center position, that is, from the guards on either side of 25cm, if the without solid part passed the grilles, then battery unexploded. Here on the "net" specific to show: cable with a diameter of 0.25mm soft aluminum, density network of 6 to 7 / cm.

Second, how to prevent the lithium battery explode?

All lithium battery explosions are caused by a short circuit which caused by the fever, and caused by a short circuit due to another reasons like overcharge, over discharge, positive and negative direct docking, electrolyte leakage. Therefore, in the lithium battery design, you can start from the following:

1, prohibits overcharging to 4.2V or more;

2, prohibit over discharging 2.75V or less;

3, installed explosion-proof valve on a metal shell;

4, short-circuit proof on the process.

Of course, Design process Lithium battery need to have a design for battery protection circuit board. Although this will increase the production cost of lithium batteries, it is necessary for safety to use lithium batteries, all the normal lithium battery manufacturer's products are inevitably this design.

Third, polymer lithium batteries will explode it?

Lithium polymer battery is the use of flexible packaging and polymer electrolyte made of a lithium battery products, under normal usage circumstances, storage will not explode unless damage caused artificially strong short-circuited.

To reduce the explosion happened, lithium polymer is used by more and more occasions, although lithium batteries replace other types batteries are still alternatives, in the type of lithium battery, the lithium-polymer battery has already begun to replace ordinary lithium batteries in some field.

Receiver Battery

TYPHON 5300MAH 7.4V 60C 2S2P LIPO HARDCASE

Description

 - Product Type:lipo battery pack

- Capacity: 5300mAh

- Voltage: 7.4V

- Dimensions: 25 *46.5 *138 mm

- Balance Plug: JST-XH

- Discharge Plug: banana plug or T+XHR plug

Jame
typhonpower@gmail.com
www.firedragon-power.com

Does A LiPo Batteries Catch Fire?

LiPo batteries are a recent introduction. They are particularly popular for remote-control aircraft and mobile devices due to their light weight. However, they are prone to small but intense fires and require special handling.
Chemical Explanation

LiPo batteries contain lithium. If lithium is exposed to air with even a slight amount of humidity, it can ignite, releasing hydrogen and other chemicals. Hydrogen is extremely explosive, and is ignited by the burning lithium, resulting in a violent flare-up.

Non-LiPo Chargers

LiPo batteries require chargers made specifically for them. Using the wrong type of charger is likely to cause a flare-up.

Physical Damage

Anything that breaks open a LiPo battery pack, even a small puncture, will likely result in a fire.

Physical Process

The usual cause of flare-ups is mishandling, which causes a build-up of gas in the battery, leading to a characteristic "LiPo puff" -- the swelling of the battery package. If the "puff" is large enough, the package may rupture, exposing the lithium to air.

Overloading

If too much current is drawn ("overloading"), the battery will become very hot and release gas internally. The battery will rupture, exposing the lithium to air, resulting in a fire.

What connectors come on the li-po/ transmitter/NIMH batteries?

(1). As per lipo packs, usually we use JST-XHR (E-Sky/Align type); JST-EHR (Kokam, Robbe type); Polyquest, Thunderpower

/flightpower type...etc. for charging; And for discharge, we can use Deans connector and JST-SYP/SYR (BEC connector)

or just two wires out for power as per your instruction. 

(2). For Transmitter/Receiver lipo packs, we usually can also use above listed charge balance connectors for you for charging. And always use FUTABA/JR or both for you for discharge as you need. 

(3). For NIMH battery packs, we usually use Tamiya connectors for charge and discharge.

The Very Best Batteries to make use of

Selecting the best kind of battery for your house products and electronics is difficult enough, but knowing the most effective and lengthy lasting could be even harder.

With any battery type you ought to be searching for top capabilities and elevated energy densities--it's also wise to consider practical advantages just like a cell being rechargeable and also the correct size for the device.

LiPo Batteries

Lithium-ion polymer batteries--also called LiPo batteries--would be the rechargeable cells that provide a lengthy-lasting and light-weight option to batteries that aren't rechargeable.

LiPo batteries are generally utilized in handheld remote control RC automobiles like helis and planes. Based on the RC Fun Helicopter website, the greater LiPo batteries are the ones which contain a higher capacity and discharge rate.

Capacity is measured in milliamp hrs (mAh) and informs you the way much load it will take to become depleted within an hour. The greater the mAh value, the more the cell can last. A few of the suggested LiPo producers include FlightPower, Thunder Energy and Hobby King.

LiPo batteries will exhaust energy eventually, which means you must purchase a charger to prevent your RC vehicle wearing down mid-session.

What kind of warranty do they have?

About the warranty, we will replace 100% within 3 months, and 50% within 6 months if our products are not good enough as per our specification.

Complete Guide to Lithium Polymer Batteries

Lithium batteries are the preferred power sources for most electric modelers today. They offer high discharge rates and a high energy storage/weight ratio. However, using them properly and charging them correctly is no trivial task. There are many things to consider before using lithium cells for e-flight. But none is more important than safety.

1. Charging/Saftey IMPORTANT!
Until you are willing to follow all saftey precautions, DO NOT use lithium batteries. If your a type of person that prefers to push the limits of products, or be haphazard about following saftey requirements. Lithium technology is not for you. Read on to find out why.

Lithium cells must be charged very differently than NiCad or NiMH. They require a special charger specifically designed to charge lithium cells. In general any charger that can charge lithium ion can charge lithium polymer, assuming that the cell count is correct. You must NEVER charge lithium cells with a NiCad or NiMH only battery charger. This is dangerous. Charging cells is the most hazardous part of using lithium batteries. EXTREME care must be taken when charging them. It is important to set your charger to the correct voltage or cell count. Failure to do this can cause the battery to spew violent flames. There have been many fires directly caused by lithium batteries. PLEASE BE RESPONSIBLE when charging lithium batteries.

Here are a few MANDATORY guidelines for charging/using LiPos (Lithium Polymer Batteries).


1. Use only a charger approved for lithium batteries. The charger may be designed for Li-Ion or Li-Poly. Both batteries are charged in exactly the same. Some older cell phone chargers may charge the batteries .1 volt to low (4.1 vs 4.2), but that will not harm the battery. However, inexpensive lithium chargers are widely available and the use of cellphone chargers is highly discouraged. 
2. Make certain that the correct cell count is set on your charger. Watch the charger very closely for the first few minutes to ensure that the correct cell count continues to be displayed. If you don't know how to do that, get a charger that you do know how or don't charge the batteries.
3. Use the Taps. Before you charge a new Lithium pack, check the voltage of each cell individually. Then do this after every tenth cycle there after. This is absolutely critical in that an unbalanced pack can explode while charging even if the correct cell count is chosen. If the cells are not within 0.1 volts of each other then charge each cell individually to 4.2 volts so that they are all equal. If after every discharge the pack is unbalanced you have a faulty cell and that pack must be replaced.
Taps are provided on most new lithium packs. Taps give you the ability to check individual cell voltages and charge one cell at a time. Make sure and get the appropriate connector to go into your taps. Don't try to stick you volt meter probes in the taps to measure voltage. They could slip and short your cells. Don't try to charge more than one cell at a time from the taps. Unless you have an isolated ground charging system, you'll short your batteries out. Refer to your individual cell maker for tap pin-outs. 
4. NEVER charge the batteries unattended. This is the number one reason for houses and cars being burned to a crisp by lithium fires.
5. Use a safe surface to charge your batteries on so that if they burst into flame no damage will occur. Vented fire safes, pyrex dishes with sand in the bottom, fireplaces, plant pots, are all good options.
6. DO NOT CHARGE AT MORE THAN 1C unless specifically authorized by the pack vendor. I have personally had a fire in my home because of violating this rule. Todays highest discharge batteries can supposedly be safely charged at greater than 1C, however so far in all cases doing so shortens the life of the pack. Better to buy 3 packs than to try to charge 1 pack 3 times quickly. This may change in the future but as of Winter 2005 1C is still the recommended charge rate. 
7. DO NOT puncture the cell, ever. If a cell balloons quickly place it in a fire safe place, especially if you were charging it when it ballooned. After you have let the cell sit in the fire safe place for at least 2 hours. Discharge the cell/pack slowly. This can be done by wiring a flashlight bulb of appropriate voltage (higher is voltage is ok, lower voltage is no) up to your batteries connector type and attaching the bulb to the battery. Wait until the light is completely off, then throw the battery away.
8. If you crash with your lithium cells they may be damaged such that they are shorted inside. The cells may look just fine. If you crash in ANY way carefully remove the battery pack from the aircraft and watch it carefully for at least the next 20 min. Several fires have been caused by damaged cells being thrown in the car and then the cells catch fire later and destroys the car completely. 
9. Charge your batteries in a open ventilated area. If a battery does rupture or explode hazardous fumes and material will spew from the battery. 
10. Keep a bucket of sand nearby when you are flying or charging batteries. This is a cost effective way to extinguish fires. This is very cheap and absolutly necessary.
11. It can happen to you, do not think to yourself that “it won't happen to me” as soon as you do that it you'll be trying to rescue your kids from your burning house or car. I'm very serious about this.

Now that we have covered that important topic let's move on to lighter matters:

2. Lithium What?
Lithium Polymer batteries are used in many electronic devices. Cell Phone, Laptops, PDA's, Hearing Aids just to name a few. Most, if not all, lithium polymer batteries are not designed for RC use, we use them in different applications than they were designed for. They are similar to Lithium Ion batteries in that they each have a nominal voltage of 3.6 volts, but dissimilar in that they do not have a hard metal casing but rather a flexible material encloses the chemicals inside. The "normal" lithium polymer batteries are thin rectangle shapes with two tabs on the top one positive one negative. The reason we use Lithium cells is that they are significantly lighter than comparable NiCad or NiMH batteries, which makes our planes fly longer and better.

3. Voltage and Cell Count:
LiPolys act differently than NiCad or NiMH batteries do when charging and discharging. Lithium batteries are fully charged when each cell has a voltage of 4.2 volts. They are fully discharged when each cell has a voltage of 3.0 volts. It is important not to exceed both the high voltage of 4.2 volts and the low voltage of 3.0 volts. Exceeding these limits can harm the battery.
The way to ensure that you do not go below 3.0 volts while flying is to set the low voltage cutoff (LVC) of your electronic speed control (ESC). It important to use a programmable ESC since the correct voltage cutoff is critical to the life of your batteries. Use the ESC's programming mode to set the LVC to 3.0 volts per cell with a hard cutoff, or 3.3 volts per cell with a soft cutoff. If your ESC does not have hard or soft cutoff, use 3.0 volts per cell. You will know when flying that it is time to land when you experience a sudden drop in power caused by the LVC. 
If your ESC has an automatic lithium mode. Use it, it will correctly sense the number of cells and set the auto cutoff appropriately. 
If you have previously been flying with NiCad or NiMH batteries, switching over to lithium polymer will result in a different number of cells being used. If you had 6 to 7 round cells then 2 lithium polymer cells will correctly duplicate the voltage of those cells. If you had 10-11 cells then 3 lithium polymer cells would be right for you. There are a lot of 8 cell flyer's out there that are stuck between 2 and 3 cells. In my experience the best option is to determine how many watts you were using before and duplicate that with your LiPos, Motor, and Prop. For example. If you were running 8 cells (9.6volts) at 10 amps on a speed 400 airplane, then you have 9.6 x10, 96 watts. So if you went with 2 lithium polymer cells (7.2 volts nominal) then you'd need to change your prop such that you used 13 amps. If you went to 3 LiPoly's (10.8 volts nominal) then you'd need to reduce the amperage to 8.9 amps. These estimates are approximate, and some experimentation is required for best results but conserving Watts is a good way to start.

4.10C from 3S4P? Naming conventions explained.
How fast a battery can discharge is it's maximum current capacity. Current is generally rated in C's for the battery. C is how long it takes to discharge the battery in fractions of an hour. For instance 1 C discharges the battery in 1/1 hours or 1 hour. 2 C discharges the battery in ½ or half an hour. All RC batteries are rated in milli Amp hours. If a battery is rated at 2000 mAh and you discharge it at 2000mA (or 2 amps, 1 amp = 1000mA) it will be completely discharged in one hour. The C rating of the battery is thus based on its capacity. A 2000mAh cell discharged a 2 amps is being discharged at 1C (2000mA x 1), a 2000mAh cell discharged at 6 amps is being discharged at 3C( 2000mA x 3).
All batteries have limitations on how fast they can discharge. Because of this many LiPoly batteries are put in parallel to increase the current capacity of the battery pack. When 2 batteries are wired positive to positive and negative to negative they become like one battery with double the capacity. If you have 2 2000mAh cells and you wire them in parallel then the result is the same as 1 4000mAh cell. This 4000mAh cell has the same C rating as the original 2000mAh cells did. Thus if the 2000mAh cells could discharge at a maximum of 5C, or 10 amps then the new 4000mAh cell can also discharge at 5C or (4000mA x 5) 20 amps. This method of battery pack building allows us to use LiPoly batteries at higher currents than single cells could produce. 
The naming convention that allows you to decipher how many cells are in parallel and how many are in series is the XSXP method. The number in front of the S represents the number of series cells in the pack so 3S means it's a 3 cell pack. The number in front of P means the number of cells in parallel. So a 3S4P pack of 2100mAh cells has a total of 12 cells inside. It will have the voltage of any other 3S pack since the number of cells in series determines the voltage. It will have the current handling of 4 times the maximum C rating of the 12 individual cells. So say our 3S4P pack had a maximum discharge of 6C. That means that it has a nominal voltage of 10.8 volts (3x3.6) and a maximum discharge rate of 50.4 amps (2100mAh x 6Cx4P ). 

5. Which battery should you buy?
With so many choices out there it is difficult to decipher what is marketing hype, what is brand
loyalty, and what is outright lies. Battery manufacturers are constantly trying to one up one another. While capitalism can drive prices down, it also can give cause to false claims about products. 
One great way to find out what the best battery is, is to look at graphs of the batteries performance. Looking at how low the voltage of the cell drops at various amperages will give you a metric to compare that battery to similar size/weight batteries. 
If graphs aren't your thing then simply look at what other people are using in successful setups that are similar to your application. If a lot of people are reporting long flight times and lots of power from airplane X, with power system Y, and battery Z and you do the same, then if your setup is similar the same battery will probably work well for you. 
It pays to learn something about Watts, Volts, and Amps. Understanding these concepts is beyond the scope of this document, but can serve you well in not only figuring out what battery is best but also in your electric aircraft hobby.
I'm not convinced that a 30C battery is really any better than a 10 or 20C battery. Sure a higher C rating means it can discharge faster. But at the same time a battery discharged at 20C continuously will be empty in 3 minutes. Do you really only want to use the battery for 3 minutes? I love having burst power in helicopters and boats, but in almost all other applications actually running a battery at or above 20C is useless to me. I prefer to run batteries at 8-10 C and have a little headroom if I need it.
A final note on choosing a battery. Don't cheap out. Confirm that your batteries are capable of running that the amperage level you plan to use them at. Running a cell at a higher C rating than the battery can handle can not only damage your batteries, but it can also damage your speed control. Castle Creations has an excellent article on how using a weak battery can destroy a perfectly good speed control of any brand. Better to buy a bit better battery than you need than to destroy your electronics.

6. Dealing with temperature.
Lithium batteries like heat, but not too much. In the winter time, try to keep your batteries from the cold as much as possible. Leave them in the car while your flying, or keep them in your cargo pants... etc. At the same time don't let them heat up too much. Try to keep your batteries from reaching 160F after use. This will prolong the life of the cells. A good way to measure temperature is a handheld IR meter, they can be found for around $50.00 at most hobby shops.