How long should I charge the batteries - Printable Version +- HP Forums (https://archived.hpcalc.org/museumforum) +-- Forum: HP Museum Forums (https://archived.hpcalc.org/museumforum/forum-1.html) +--- Forum: Old HP Forum Archives (https://archived.hpcalc.org/museumforum/forum-2.html) +--- Thread: How long should I charge the batteries (/thread-45987.html) |
How long should I charge the batteries - Arnaud Amiel - 11-05-2003 I have rebuilt my 45 battery pack and used 650mAh NiCad. I believe the original was 450mAh and had to be charged for 14h. Am I right in thinking I should charge mine for 20h. Thanks for your input
Arnaud
Re: How long should I charge the batteries - Bill (Smithville, NJ) - 11-05-2003 I've always used the following for NiCds: (1.5) times (battery capacity) divided by (charger capacity) = hours Assuming the HP-45 charger is 50 ma, then 1.5 x 450 / 50 = 13.5 hours 1.5 x 650 / 50 = 19.5 hours So, 20 hours should be about right.
Re: How long should I charge the batteries - David Smith - 11-05-2003 Most of the original HP packs were 600 maH. Some very early ones were 500.
Re: How long should I charge the batteries - JasonG - 11-08-2003 Aha! Charge them all the way to the end, right from one end to the other. Anything else leads to a big bulge at one end and then it won't fit into the battery compartment. Wooooooooha! JasonG...
PS: Sorry for the frivolity...it's just a wild reaction against a very crap week...
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