Disclaimer: Use of our Lithium Polymer batteries is COMPLETELY AT YOUR OWN RISK. We are not responsible for accidents caused by the use, proper or otherwise, of Lithium Polymer batteries. Due to these circumstances there is no warranty other than posted on our warranty page. click here
Use of these batteries constitutes an agreement with these terms.
Please read and understand the following information before using any Lithium Polymer battery:
Charging and Use: If a Lithium Polymer battery is overcharged it may become an explosive fireball spewing chemicals at
very high temperatures. You MUST utilize a charger specifically designed to charge Lithium Polymer batteries. Check and double-check to be certain that the manual cell count selector, if your charger has one, is correctly set for the specific battery being charged. Example: 2S= 2 cells or 7.4 Volts. 3S= 3 cells or 11.1 Volts.
Lithium Polymer Batteries should be charged at rates of 1C (1 x Capacity) or less unless stated otherwise. For example, a 5000mAh pack should be charged at a rate no higher than 5 Amps.
Use of a Lipo sack is highly recommended and is required by many race tracks and by ROAR for their sanctioned events.
Do Not fully discharge Lithium Polymer batteries. The low voltage threshold for discharge (under a load) is 3.0 volts per cell. Allowing either cell in the pack to drop below this voltage will irreversibly damage its internal chemistry and possibly explode.
Always store Lithium Polymer batteries in a fireproof container!
Do Not use packs that appear to be damaged, warped, swollen or otherwise appear different than their like-new condition.
IMPORTANT! - If for any reason, a Lithium Polymer battery appears deformed or is unusually warm to the touch, or after any unusual circumstances (such as a radio-controlled airplane crash), take extreme caution. Lithium Polymer battery packs with internal chemical leaks have been known to explode minutes, even hours, after being damaged.
Why You Should Balance Your Packs: Standard lithium battery chargers and battery cut-off circuitry, such as that found on electronic speed controls, must rely upon the average voltage of the entire pack to determine when charging and/or discharging is complete. This is because the cells in the pack are effectively wired in a series configuration . Unfortunately, this has a negative drawback. If for some reason one of the cell's voltages becomes higher or lower than the other cells in the pack, the charger or battery cut-off circuit may improperly sense the voltage of the cells in the pack (because of voltage averaging). When this happens, the averaged voltage of the pack will no longer properly reflect the voltage of each cell in the pack. This improper information may lead to the over-charging or over-discharging of one or more of the cells in the pack. Lithium Polymer chemistry is such that over-charging or over-discharging may substantially reduce the life of the cell and in some cases, POSE A SERIOUS FIRE HAZARD.
Taps - Lithium Polymer batteries are equipped with special plugs called "Taps." Tap plugs provide access to each cell in the pack individually. Individual access to each cell provides reliable voltage readings, allowing one to correct an imbalance should one develop. Taps allow each cell to be charged individually. However, Taps must be shown a great deal of respect. Depending upon the equipment used, it may be very easy for one to accidentally short one or more of the cells by simply allowing testing gear or exposed testing leads to come into contact with one another or a conducting surface.
TAKE EXTREME CAUTION WHEN USING TAPS. Take every precaution to prevent short-circuiting Lithium Polymer cells, not just because this will almost instantly ruin the cell, but because it may pose a fire hazard. PAY CAREFUL ATTENTION TO THE BALANCE WIRES COMING OUT OF THE PACK. DO NOT ALLOW THEM TO GET CRUSHED OR EXPOSE THE BARE WIRES. DO NOT ATTEMPT TO CUT TAP CONNECTORS OFF OF A LITHIUM BATTERY PACK - THE CUTTING INSTRUMENT IS CONDUCTIVE AND MAY SHORT-CIRCUIT THE CELLS!
A number of products are on the market to facilitate cell balancing for packs with Tap plugs. A properly configured adapter and use of a pack balancer will greatly reduce the risk of mistakenly short-circuiting a cell. Taps, when used properly, are a great feature, and should significantly improve the life and performance of your Lithium Polymer batteries.
Long-Term Storage: Store Lithium Polymer batteries at a partial charge, at least 50% of capacity. (for seasonal storage)
Warnings:
- Do Not short circuit.
- Do Not discharge at a rate higher than the recommended rate.
- Do Not charge at a rate higher than the recommended rate.
- Overcharging, short-circuiting, or over discharging may cause Lithium Polymer cells to swell and explosively burst into flames.
- Do Not open battery or dispose of in fire.
Fire: In case of a fire where lithium batteries are present, apply a smothering agent such as METL-X, sand, dry-ground dolomite, soda ash, or flood the area with water.
A smothering agent will help extinguish burning lithium batteries. Water may not extinguish burning batteries but will help to cool any adjacent batteries and control the spread of fire. When water is used, however, hydrogen gas may evolve. In a confined space, hydrogen gas can form an explosive mixture. In such a circumstances, smothering agents are recommended.
Disposal: Dispose in accordance with all applicable federal, state and local regulations.