Sealed Lead Acid battery discharg limit?

[elecfriend]

I am using sealed Lead acid battery 12V, 2.3AH. If battery low circuit is NOT used, it discharged as low as 3V. Is it harmful? should I use low limit protection circuit? if yes, then upto what level?

 

[Hero999]

It it's charged below about 10V the battery will be damaged.

If it's measuring 3V then it needs replacing.

 

[ericgibbs]

I am using sealed Lead acid battery 12V, 2.3AH. If battery low circuit is NOT used, it discharged as low as 3V. Is it harmful? should I use low limit protection circuit? if yes, then upto what level?

hi,
The recommended discharged voltage is 10.8V.
Recharge at 13.8V for 'float' charge or 14V for fast recharge.