I have the following:
Lead acid battery
Specs: 12V, 7.2 Ah
Model: Portalac PXL12072
Description: Kind of old, so maybe sulfated, but I won't know until I try to charge it.
Lead acid battery charger
Output specs: 10 Amps max., 14.4 VDC, 144 W max.
Model: Denryo BP-1210A
Description: New. "3-stage high tech battery charger"
The charger manual also contains a table that lists other chargers Denryo makes and their recommended batteries. My charger seems to be for batteries between 12V/30Ah (minimum capacity) ~ 12V/100Ah (maximum capacity). However, at 7.2 Ah, its capacity is below the recommended minimum capacity.
Is there a safety risk to use a 7.2 Ah battery with a charger of minimum recommended capacity 30 Ah?
This question states,
The charge current for small lead-acid batteries should be set between 10% and 30% of the rated capacity (30% of a 2Ah battery would be 600mA).
In my case, 30% of 7.2 Ah is 2.16 A. My charger outputs 10 A max., i.e. 0~10 A. But I don't know how smart the charger is to adjust its output.
This is like my question, but it is unanswered.