How long should I charge the batteries « Next Oldest | Next Newest »

 ▼ Arnaud Amiel Senior Member Posts: 362 Threads: 30 Joined: Jul 2005 11-05-2003, 01:33 PM 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 ▼ Bill (Smithville, NJ) Senior Member Posts: 614 Threads: 66 Joined: Jul 2006 11-05-2003, 01:49 PM 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. David Smith Posting Freak Posts: 1,788 Threads: 36 Joined: Aug 2007 11-05-2003, 03:42 PM Most of the original HP packs were 600 maH. Some very early ones were 500. JasonG Junior Member Posts: 25 Threads: 8 Joined: Jan 1970 11-08-2003, 02:55 PM 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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