On Wednesday, February 25, 2015 at 6:51:09 PM UTC-5, Dan Marotta wrote:
I'm considering replacing the lead-acid tail battery in my LAK-17a
with NiMH batteries.* I find D cells rated at 1.2v 10 Ah which would
be ideal to build up a 12v 10 Ah pack.* I've already checked fitment
in the sealed battery box using alkaline D cells.



Can anyone tell me if these batteries are actually 1.2v.* If so, I'd
need to use 11 or 12 of them to get the voltage I want.


--

Dan Marotta

Dan, NiMH are a really bad choice. I know someone whose battery in a glider got really hot to the point of melting fiber glass. These batteries were put in by a glider manufacturer and properly sized.

If you want more information contact me directly.