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MaxAmps.com's Official Stance on pack heating and bumping.....

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Old 01-15-2009, 04:25 PM
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JAM MaxAmps
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Default MaxAmps.com's Official Stance on pack heating and bumping.....

Lipo Battery Warming Devices/”Bumping” Lipo Packs: 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 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!


Best regards,

The MaxAmps.com Team
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Old 05-03-2009, 08:05 PM
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Default RE: MaxAmps.com's Official Stance on pack heating and bumping.....

I would have to make an argument against that. The packs won't gain voltage, but performance will be better at the start of the run. As the pack heats up the internal resistance becomes lower allowing higher discharge rates.
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