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Old 01-22-2008, 05:54 PM   #1
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Default what amps to charge at (lipo)

what do you charge your lipos at ......i have always charged at 2 amps .......this is from max amps site

Charging: Lithium Polymer batteries have specific charging requirements and ONLY chargers rated for Lithium Polymer cells may be used. The best chargers are those which require the user to manually select cell count and charge rate for each pack of cells, then automatically check to see that the settings are correct. The Hyperion EOS Charger line belongs to this category. Chargers which use only automatic detection of cell count (and on that basis set charge voltage) are prone to error, and can damage cells or cause a fire due to over-voltage charging of cells. We recommend that these chargers be set manually, if used. Other chargers are set manually, but do not include a safety circuit to oversee that setting. These are prone to user error, and should also be checked very carefully to insure proper use.

Lithium CC/CV chargers, like those in the Hyperion EOS Charger line, must be used. These charge initially at a constant 4.2V and constant 1C rate, then taper the charge rate as the battery nears full capacity. Cells are about 90% charged in one hour, and can be left connected for another 20-30 minutes to complete the charge. The maximum permissible charge voltage per cell is 4.2V. The maximum recommended charge rate for Lithium Polymer cells is 1C (ex: 1.5A for a 1500mAh pack). Please do not charge your lithium polymer at any rate higher than 1C. Doing so may reduce the capacity and life cycle of the cells, with very little savings in charge time.
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Old 01-22-2008, 06:14 PM   #2
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Charge at 1C unless the manufacturer says otherwise.

I know that hyperion chargers have the ability to safely charge at 2C, but I would only do that with there stuff that they specifically recommend like there lipos.

If you don't know, go with 1C to be safe. I charge at 6 amps for my 6000mah pack.
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Old 01-22-2008, 06:38 PM   #3
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As per the instructions that came with my Orion packs, I charge at 1 amp for every 1000mah. So I charge my 4800 at 4.8 amps and my 3600 at 3.6 amps. I've never had any problems. Of course, you need a charger that is designed to charge Lipo packs. I use an LRP Pulsar 3.
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