Just remember: It is absolutelly superior anything else to use singe cells
and slow-charge them individually. Next best is slow charge when the
batteries are in series.
Both those methods outclasses fast charge.
Slow charge means:
1/ Divide the capacity (for example 1800 mAh) by a factor 10 = 180. Ten
hours a 180 mA is 1800 mA.
2/ Then add 40% time = 4 hours.
Result: Charge 180 mA for 14 hours.
No doupt, Vicky - if I were you, I would get the biggest (most capacity,
2200mAh??) NiMhy or NiCads that I could find place for in the Sony box. No
temperature switch.
Then get a simple charger which has the current limitation that you need for
slow charge, as calculated above. (2200 mAh = 220 mA for 14 hours, for example.)
Remember: The voltage from the charger is of no importance, as long as it
gives correct current, 180 mA or 220 mA or whatever. NiCads etc need is
current regulation, (mA) not voltage regulation. A lead-acid accu needs
voltage regulation! That is something else.
A charger for 7,2 volts Nicads or NiMhy batteries may give 30 volts when you
measure it, not connected to the batteries, but fall to some few volts more
than the accus, when you connect it.
Klas.
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