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Old 22nd January 2013 | 18:40
  #321 (permalink)  
Rory166
 
Joined: Jan 2008
Posts: 29
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From: uk
recharging the battery

Bearing in mind these batteries are only a standby and not used in any routine situation.

The self discharge rate of these batteries is I believe 8% @ 21C and 15% per month at 40C. If we take 15% as a worst case. The maximum allowed charging rate for these cells is 1C ie. 65A, say for safety a max charging current of 30A has been selected by the designers that would require 20 mins per month of charging. Adjust the figures to the actual max charging rate.

I am confident enough time is spent hooked up to ground power to recharge these batteries.

Last edited by Rory166; 22nd January 2013 at 18:41. Reason: added comma after 65A
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