Battery Tender Jr.
Got it on sale from Cycle Gear for $20.
Couldn't have spent a better $20 if I tried.
Motorcycle batteries are notoriously easy to lose during colder months.
The ease of use, and piece of mind you get with a battery tender is fabulous.
Can't recommend enough.
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2008 WR250X
Gearing: 13t - 48t
Power Commander 5 / PC-V
Airbox Door Removed - Flapper glued - AIS removed
FmF Q4
Bridgestone Battlax BT-003rs