On my 5sc I have a venom 5000 mah pack that just won't fully charge. The highest I can get it to is around 3000 mah charge after I discharge it completely and let it sit before the recharge. So I'm wondering what else I can run instead of NIMH? I like the stock radio and has done me well. I also cannot afford a new radio and I have a venom charger that can charge everything. Thanks in advance as always, Steve.