My old battery was shot - came with the bike. So this guy I know hooked me up with a new lithium iron phosphate (LiFePO4) battery. I put it on my trickle charger (battery tender jr) as per his direction for about 25 minutes and then installed it. Bike fired up great and I took it for a spin for about a mile, parked it outside and that was it. A month has gone by and now it's dead. Like 2amps on the multimeter dead. I left a cell phone charger plugged in but nothing connected to it. Maybe that's why?? I hooked up the battery tender jr and it's apparently not detecting the battery at all because it's flashing red which means no battery connected. I have another charger that puts out 6 amps. Is this perhaps what I need to connect to get some juice into the lithium iron phosphate battery so the trickle charger will recognize it?? The battery is a Ballistic Evo2 8 cell 4.6 amp hours according to the website and the box says 49.2 W/hrs.