1.How to calculate backup time from series connected battery
of 12v dc with 26Ah for 2battery?

Answer Posted / monojit dutta

IF A LOAD IS CONNECTED WHICH WILL DRAW 26 A AT 24 v (i.e
the load value is 24/26=0.92 ohm), THEN THE BACK UP TIME
WILL BE 1 HRS.

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