Zippy packs offer bang for the buck. They are basically disposable lipos IMHO, but they absolutely cannot be beat for the price all things considered.
After a hard year of racing with 6 5s zippy-h packs, 4 won't stay in balance. One puffed and pretty much has dead cell. The 6th one is doing ok, but I can tell one of the cells is getting weak.
Does this mean the zippys are bad? No, but again they are basically disposable lipos. Good for a year of racing and chuck em in the garbage. For $75-90 bucks a pop... who cares. They cost less than a 1/3rd of the name brand ones and generally perform good enough.
I also have several 5s NeuEnergy packs that I picked up on clearance sales. They have NEVER been out of balance after nearly a year of racing. EVER. I only balance them maybe every 5 cycles, but it has never been needed. I can say without doubt the name brand batteries are more durable, better constructed, and will last longer but you have to decide if they are worth the premium pricing.
Personally, with battery technology advancing so rapidly, it doesn't make sense to pay top dollar for batteries. My 25c batteries from last year are now out of style considering 30c seems to be the standard. Next year, it will be 35c-40c. I don't need lipos to last 3 or 4 years anymore.
Cars I've Owned: Tekno EB48 & SCT410, AE 8.2e, AE SC10 4x4, MBX6e Tekno V4, Xray 808e, Xray 8Te, Losi 810e, Losi SCTE 4x4, Losi 22, Hot Bodies Ve8, Losi 8te, and plenty of Traxxas
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