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NIMH Initial/Form Charge

Old 02-07-2006, 06:03 PM
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geraldr920
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Default NIMH Initial/Form Charge

Got a new NiMh pack, 9.6V 8c 1450mah and I am trying to do a form charge on it. I dialed in all the specs for the pack. Battery info states to do this charge at 150 ma for 16 to 20 hrs but my charger (Triton) can only dial in at 100 mah intervals, so I started the charge at 100 ma. The charger shut down after 176 minutes and putting in 300 ma. Gave it an overnight break and tried the same thing over again. Got the same results. Did a volt check and got the following readings, 10.95 v @ no load, 10.80 v @ 250 ma load. I'm guessing here but it looks like this pack is fully charged and just needs to go into the discharge mode. Any ideas?
Old 02-07-2006, 07:15 PM
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JNorton
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Default RE: NIMH Initial/Form Charge

If you discharge at C/5 1450 mAh / 5 = 290 or 300 mA) until .9volts per cell you should get pretty close to what the cell manufactures rated capacity.

This previous post that should help you set the Triton up to do a C/10 charge.
http://www.rcuniverse.com/forum/m_37...tm.htm#3752899

I much prefer using a constant current charger. Sirius makes a great one.
http://www.siriuselectronics.com/ind...roducts_id=225

Less expensive from NoBs Batteries. Middle of the page. CH-806 Six Port MultiCharger $29.95
http://www.hangtimes.com/chargers.html

John
Old 02-07-2006, 10:23 PM
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geraldr920
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Default RE: NIMH Initial/Form Charge

O.K. John, and I appreciate the info. Guess I really do need to shop for another charger. Don't like the thought of having to stand over this one to get the job done.

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