Antigravity battery
Posted: Thu Jan 24, 2019 2:30 pm
Ever since I bought this 2003 450 EXC, the starter hasn't wanted to start the bike when it's cold. That's not a totally uncommon problem for these bikes, but usually they start when warm. I bought a Chinesium Li-Ion battery off of Amazon in October 2017 that seemed to help for a while.
Over the past few months, it has gone downhill. At Dirty Santa, it didn't want to start except by the end of the day when it was nice and warm. I assumed the starter was getting weak because it wouldn't get any better with a fresh charge on the battery. I bought a new OEM starter, new starter solenoid, and new cables. It didn't help. It was being a PITA to kick start, too. I adjusted the valves and kick starting returned to normal.
At Phil's private land the other day, it wouldn't start at all via the starter even after riding a while. On a hunch, I suspected the Chinesium battery to be the problem now. I popped in a stock-size AGM I had that was about 6 months older than the Li-Ion one. It would spin the starter, but not quite fast enough to fire it cold (back to normal state). Once it warmed up, the AGM battery would fire it up consistently. So the problem turns out to be the battery.
The stock AGM battery is 75 CCA. Based on some research, I decided to go with AntiGravity batteries for a replacement. They use a slightly different technology than most other Li-Ion battery makers. They're made in the USA. Three year warranty. They're waterproof so no worries if you submerge the bike. There's an ADV Rider discount, too. I went with the AntiGravity 8-cell battery. It is physically just a little smaller than the stock AGM but it puts out 240 CCA.
Oh yeah, it also started the bike without issue, totally cold. Yay AntiGravity!
Over the past few months, it has gone downhill. At Dirty Santa, it didn't want to start except by the end of the day when it was nice and warm. I assumed the starter was getting weak because it wouldn't get any better with a fresh charge on the battery. I bought a new OEM starter, new starter solenoid, and new cables. It didn't help. It was being a PITA to kick start, too. I adjusted the valves and kick starting returned to normal.
At Phil's private land the other day, it wouldn't start at all via the starter even after riding a while. On a hunch, I suspected the Chinesium battery to be the problem now. I popped in a stock-size AGM I had that was about 6 months older than the Li-Ion one. It would spin the starter, but not quite fast enough to fire it cold (back to normal state). Once it warmed up, the AGM battery would fire it up consistently. So the problem turns out to be the battery.
The stock AGM battery is 75 CCA. Based on some research, I decided to go with AntiGravity batteries for a replacement. They use a slightly different technology than most other Li-Ion battery makers. They're made in the USA. Three year warranty. They're waterproof so no worries if you submerge the bike. There's an ADV Rider discount, too. I went with the AntiGravity 8-cell battery. It is physically just a little smaller than the stock AGM but it puts out 240 CCA.
Oh yeah, it also started the bike without issue, totally cold. Yay AntiGravity!