Charging Rate for a Ni-Mih Battery Pack
 

Hi Guys
anybody help me out with this I have a 4200 mah Ni-Mih 4.8v sub c receiver pack and i plan to charge it at home for the recommended 14 to 16 hours at 400 mah but for the nice days in the summer when i will be at the flying field for much longer i would like to top it up with a fast charge Can anybody tell me what is the maximum safest charge i could put into it My charger is a Jamara X220 that can charge up to 5amps hope someone can help me out here
All the best
Styk

RE: Charging Rate for a Ni-Mih Battery Pack
 

After a couple forming charges you can typically fast charge a good NiMh battery at 1C or 4 Amp/hours in your case. It would be more helpful though if you told us what battery cell is used in your pack. All batteries are not built the same.

RE: Charging Rate for a Ni-Mih Battery Pack
 

Thanks for your quick reply rcairflr I haven't got a clue what cell it is as the heatshrink is covering it up Here is a link to the actual battery It is distributed in the UK by Ripmax
http://www.ripmax.com/item.asp?itemi...Category=O0500

Hope you can help
All the best
Styk

RE: Charging Rate for a Ni-Mih Battery Pack
 

Depending on how big of hurry you are in to charge your battery, a safe bet is to charge at a 1/5C rate, in your case that would be 800mA. If you decide to charge at a 1C rate of 4 A/H monitor your battery for excessive heat while charging.

RE: Charging Rate for a Ni-Mih Battery Pack
 

Thanks for that rcairflr Much appreciated
Styk