I still think my method is easier to deal with. NIMH RC batts can be charged quickly, i have 3 x 3000mah packs wired in parallel so i essentially have 9000mah packs, but i charge them all individually, it takes about 2 hrs or so per 3000mah pack, so in 6-8 hrs i can have the whole pack recharged, and you can get chargers that will charge all 3 in 3 hrs, so NIMH can be chaged ALOT quicker than SLA's and also last more cycles and is lighter