[greglepore]

I use this guy- https://www.amazon.com/Battery-Tender-BTL14A300CW-Supersmart-Lithium/dp/B07JRBV3W9/ref=sr_1_6?crid=31ALKJ2WN9EEJ&keywords=battery%2Btender%2Bbattery&qid=1652361148&sprefix=battery%2Bt%2Caps%2C2225&sr=8-6&th=1 in a 911. Been very happy with it. I do keep it on a tender when the car is not in use. They have a larger 480 cca version for 60 bucks more. Granted, the antigravity is more powerful and has the reserve feature, but its 700 bucks vs 150-200 and the cheaper, lighter alternative has full bms as well.