I have a Numax DC25MF 12v lead acid battery with a quoted capacity of 95Ah (C20)

What is the continuous safe discharge current for the battery? By 'continuous' I mean a few hours without a break, and by 'safe' I mean without shortening the life of the battery.

I can't find the figure quoted anywhere (not directly anyway) and the only Numax datasheet I can find doesn't actually mention the DC25MF model.

Can I simply divide 95 by 20 and assume it'safe to discharge at 4.75 amps?


1 Answer 1


Lead acid batteries in cars do not need a CC limit but do have a CV limit as in cars. 14.2 for flooded cells.

Follow the link on the page you gave for maintenance tips.

the C20 rate is 95Ah in 20 h so a few A will last 95Ah/few A=__ h


  • \$\begingroup\$ The DC25MF is not a car battery, it's a leisure battery and it should be possible to run it for more many hours at a modest current drain (i.e. a few amps) the question is, how many amps? \$\endgroup\$ Jul 9, 2019 at 12:11

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