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Do flooded batteries prefer 10 percent or higher discharge?

wopachop
Explorer
Explorer
For charging I see a spec of 10-13 percent of the 20ah rating.

I'm manually discharging in the garage and curious if flooded wet cells prefer a strong discharge? Or is something like 5 percent sufficient?
17 REPLIES 17

RJsfishin
Explorer
Explorer
I to would wonder why you would be discharging a battery for no reason ??
If you think that is somhow beneficial to a battery, you are grossly misinformed
Rich

'01 31' Rexall Vision, Generac 5.5k, 1000 watt Honda, PD 9245 conv, 300 watts Solar, 150 watt inv, 2 Cos 6v batts, ammeters, led voltmeters all over the place, KD/sat, 2 Oly Cat heaters w/ ox, and towing a 2012 Liberty, Lowe bass boat, or a Kawi Mule.

PNW_Steve
Explorer
Explorer
I am curious as to why you are manually discharging your batteries?

Fast or slow discharge, within reason, will not have significant impact on battery life.

When it comes to charging, I would not charge my FLA's at 30%. If you do, keep a CLOSE eye on your electrolyte levels and top regularly with DISTILLED water.

8-13% of C20 is closer to ideal.
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BFL13
Explorer II
Explorer II
wopachop wrote:
For charging I see a spec of 10-13 percent of the 20ah rating.

I'm manually discharging in the garage and curious if flooded wet cells prefer a strong discharge? Or is something like 5 percent sufficient?


Charging at 10% is recommended for longest battery life, but the typical deep cycle (eg 6v golf car or a T-1275) can take 30%. The higher rates are necessary for short gen times doing 50-80s while camping.

Discharge rates similar for battery life. 25% discharge is about max for the internal chemistry to keep up.

A long slow discharge leaves the battery undercharged that whole time, so you would want to recharge it to full real soon and maybe even do an overcharge on it.

You do what the job requires and get new batteries as needed for that. Can't let the battery decide whether you can do the job!
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