Ya never seem to save money by using the cheapest possible component. I have been using a pair of EM3ev triangle packs for 4 years now. They both have over 750 charge cycles on them and I can't see or feel a discernable difference in their performance. When you are trying to get a useful long life out of something it's usually necessary to top-drawer, and then treat and maintain it with respect. I'd suggest looking at DHGate.com for decent large capacity packs. They ring in at about 1/2 the cost of what production ebike companies charge per amp-hour. They aren't water-proof, neither are mine from EM3, but with a good triangle bag, they do just fine... even here in the PNW. Ya may not be able to tell from pictures I have been taking but it rains here quite a bit. Ride safe.
