Vintage Simmons Drums (UK) Users Group

Hi,

I've recently had to repair several bits of Simmons kit including SDS6 and SDS7 units - these had both suffered from battery leaks, luckily not too severe. 

I think the original batteries were ni-cad and I am wondering what would be a suitable substitute type that does not leak. There are ni-mh, also li-ion types available, I think some other type as well. 

My knowledge of battery technology is practically zero, so looking for some informed opinion here. I was intending to use ni-mh batteries, would that be ok?

Cheers, vout