This thread caused me to look for a better Battery Tender for my 6v trucks - they have several year old Optima AGM Batteries. These work best with
AGM battery chargers/maintainers.
Optima batteries are excellent batteries that need special charging/maintaining techniques/equipment.
The Battery Tender suggestion above is for lead-acid sealed/unsealed batteries (I already have a old 6v/12v Lead-Acid Battery Tender). It is an excellent device.
That caused me to search for a 4 AMP Battery Tender 6v/12v AGM/Lithium/Lead-acid charger and maintainer.
Here is the best priced
4 AMP Battery Charger/Maintainer "Battery Tender" that I could find. - (it includes a 6 foot power cord and 5 foot battery cables)
