Suggestions for Battery Tender

[Paul Workman]

Originally Posted by Roadster

Thanks Phil for the info, everything worked out fine....

Done deal!!! took 11 hours for the ZR-1 battery to fully charge, I am in the green now. Just have to decide if I want to leave it connected during the week as I keep the Z covered in the garage. Or maybe just hook it up during the weekends...... Decisions, decisions......

All in all, very happy with the BTP, works great, a good purchase....
and good info in this thread...........

In short, the BT is designed to be left on whenever the battery is not in use. In fact, the monitoring and replenishment and sulfate mitigating features is what separates the (BT) from the (dumb) "trickle chargers". Obviously, it will do the battery no good if the (BT or the like) charger is not connected.

FWIW, Except when driving the cars or being serviced/painted, etc., I have had a (800 mA) BT connected to one battery (the C3 Vette) for going on 9 years, and another (the ZR-1) in its 7th year: both* crank like new.

*Both batteries are just Walmart's high-end automotive, maintenance free batteries.

THAT SAID...

The Optima is a a horse of a different color. You'd need to check with the manufacturer of the (BT) to see if it is applicable or adaptible to that battery.