Espritmodel.com Telemetry Radio
Reply
Thread Tools
Old Jul 25, 2014, 07:57 PM
Registered User
United States, NY, Albany
Joined Dec 2013
24 Posts
Question
Charging NiMH Battery Pack

I have a Tenergy TB6AC 50W/5A AC/DC Dual Power Balancing Charger and am wanting to charge a 4.8 V, 900 mAh, AAA Pack NiMH battery pack (purchased from Aloft Hobbies).

I am not sure as to how to set the charger to Auto which is suggested in the very cryptically worded “manual” that came with the charger. I can't seem to get to the sub-menu under NiMH!

I am looking for advice as to (a) how to best charge this 4 AAA battery pack and (b) how to configure this charger.

Any help and advice will be appreciated.

Craig
Cbed90 is offline Find More Posts by Cbed90
Reply With Quote
Sign up now
to remove ads between posts
Old Jul 26, 2014, 10:11 AM
Registered User
Florida
Joined Aug 2004
4,062 Posts
Most AAA cells do not fare well if fast charged. You should charge that battery at 90 milliamperes for 15 to 16 hours for a good balanced full charge. If trying to charge at any higher rate, monitor the temperature of the cells and, as soon as any cell reaches about 10 degrees F above ambient, stop the charge.
Rodney is offline Find More Posts by Rodney
Reply With Quote
Old Jul 26, 2014, 10:12 AM
Registered User
pilotpete2's Avatar
The Northeast Kingdom, Vermont
Joined Jun 2004
5,159 Posts
You can't charge Nimh batteries with that charger, Lipo and LiFe only.
Your best bet for charging that pack would be use a wall wart charger that comes with most radios. The older ones usually were 50mA charge rate for 4 cell which would be a safe rate for a 900mAh battery, though a fully discharged pack would take the better part of a full day to charge, but topping off overnite would work well.
If you don't have a wall wart for charging your radio, then I sure you could easily find one today with all the old Mhz radios being retired
Pete
pilotpete2 is offline Find More Posts by pilotpete2
Reply With Quote
Old Jul 26, 2014, 04:36 PM
Registered User
ggcrandall1's Avatar
USA, GA, Marietta
Joined Aug 2005
5,557 Posts
Quote:
Originally Posted by pilotpete2 View Post
You can't charge Nimh batteries with that charger, Lipo and LiFe only.
Your best bet for charging that pack would be use a wall wart charger that comes with most radios. The older ones usually were 50mA charge rate for 4 cell which would be a safe rate for a 900mAh battery, though a fully discharged pack would take the better part of a full day to charge, but topping off overnite would work well.
If you don't have a wall wart for charging your radio, then I sure you could easily find one today with all the old Mhz radios being retired
Pete
Check again Pete. The listing I found in Amazon indicates it will charge NiMh.
http://www.amazon.com/s/?ie=UTF8&key...l_7e5ai4jjsc_e

Glen
ggcrandall1 is online now Find More Posts by ggcrandall1
Reply With Quote
Old Jul 26, 2014, 05:20 PM
Registered User
pilotpete2's Avatar
The Northeast Kingdom, Vermont
Joined Jun 2004
5,159 Posts
You be right!
I was looking at another listing and I didn't see Nimh listed.
I also can never find the relish in the refrigerator when I'm looking right at it!
Pete
pilotpete2 is offline Find More Posts by pilotpete2
Reply With Quote
Old Jul 26, 2014, 05:29 PM
Registered User
United States, NJ, Frenchtown
Joined Mar 2003
9,056 Posts
Pete

You are my long lost brother !!
cyclops2 is offline Find More Posts by cyclops2
Reply With Quote
Old Jul 26, 2014, 07:02 PM
Registered User
So. Cal.
Joined Oct 2004
7,888 Posts
I agree with Pete that a ~50mA slow charge with a standard wall charger would be best.

If you cannot locate one of these chargers, I would set cell type at NiCd (not NiMH), charge current at .1A (lowest possible), safety timer OFF, capacity cutoff at 1300mAh, and then start the charge. Check on the pack periodically and terminate when the pack starts to get warm.
mrforsyth is online now Find More Posts by mrforsyth
RCG Plus Member
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Question Charging NiMH Battery Pack Cbed90 Batteries and Chargers 1 Jul 25, 2014 07:17 PM
Question Charging NiMH Battery Pack Cbed90 DIY Electronics 0 Jul 25, 2014 04:47 PM
Discussion Replacing the 7.2v Nimh battery pack w/ 7.4v 10000Mah Lipo battery pack.... Can I Makintrax RC Tanks 8 Dec 27, 2013 04:05 AM
Discussion Nimh for battery-charged lipo Madeiner Batteries and Chargers 3 Sep 25, 2013 08:25 AM