I bought a Dillenger 350w kit a little over a year ago and installed it on a Sun cruiser. It was heaven for exactly a year and one week when suddenly the battery started shutting off while riding up any incline in PAS 5. Then it started happening in PAS 4. Then it started happening in PAS 3 just riding on a flat road. Now it only works in PAS 2, shuts down a couple times per 20 minute ride and frequently shuts down when I hit a small bump in the road. I reached out to Dillenger and they said I need to buy a new battery. But it's holding a charge fine. Seems more like some little safety thing-y in the battery (or maybe motor) is tripping it off? Dillenger suggested I get someone in my area to service it if I don't want to just replace it outright but I can't find anyone...and I live in Los Angeles! Anyone run into this or have any suggestions? Thanks.