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I have a programmable charger. What discharge rate and voltage cutoff value should I use for the Formation Process?

April 26, 2017charger cutoff Discharge FORMATION process Programmable rate value voltage

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I have a programmable charger. What discharge rate and voltage cutoff value should I use for the Formation Process?

2 Answers

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*A: Most programmable charger/cyclers allow programming the discharge current and the low voltage cutoff level for the discharge. If using a 250-300ma (.3) discharge rate set the cutoff voltage value at 1.0v per cell. If using a 500ma (.5) discharge rate set it at .8v per cell. For formation charge/discharge routines on Rx and Tx packs we don’t recommend using a discharge rate higher than 500ma (.5) and DON’T discharge under any circumstances below .8v per cell !! Packs with cell impedance ratings below 10 mOhms CAN de discharged at 1.0 amps AFTER going through the formation process.. BUT NOT BEFORE.

0

Posted

*A: Most programmable charger/cyclers allow programming the discharge current and the low voltage cutoff level for the discharge. If using a 250-300ma (.3) discharge rate set the cutoff voltage value at 1.0v per cell. If using a 500ma (.5) discharge rate set it at .8v per cell. For formation charge/discharge routines on Rx and Tx packs we don’t recommend using a discharge rate higher than 500ma (.5) and DON’T discharge under any circumstances below .8v per cell !! Packs with cell impedance ratings below 10 mOhms CAN de discharged at 1.0 amps AFTER going through the formation process..