6 Feb
2016
6 Feb
'16
5:39 p.m.
On Feb 6, 2016, at 5:31 PM, Maciej W. Rozycki
<macro at linux-mips.org> wrote:
It all depends on your definition of 'typical'. In most cases, a NiMH coin cell
will happily replace a NiCd one. But it's not always a 1:1 mapping. It never is if
'recharge' is uttered in the sentence.
You need to spend a minute looking at the circuit before declaring MH <==> NH.
It's no different than when you make any other part substitution. But when you're
mucking around with something that *feeds* power into a circuit, it's worth paying a
bit of attention, lest surprises come along.
Voltage? Recharging circuits? Current sinking
capacity. It's not
always a 1:1 mapping.
Sure, but does it really matter in a typical battery-backed-up RAM or RTC
application seen in computers? I swapped the dead original NiCd pack for
a compatible NiMH one in my DECstation 2100 some half a year ago and the
machine seems rather happy about the replacement.