two years ago I Installed 4 xAGM firefly G31 (4 x 116AH @12V) on our boat
. We live aboard and have been cruising in the Med, through the Atlantic and Caribeean.
When I first received them, they had been leaking during shipment and had faulty valves that I had to change once sent from India
The first capacity test only yielded 75% of rated capacity. After a year of service
, the capacity test yielded 50% of rated capacity and we found out that one battery
was bad. It got replaced under warranty. I was asked by the head
of engineering at Firefly to revive the bank by equalizing them (which we are not supposed to, but...) It worked to some extant. One year later, bank capacity is below 50%, and Firefly has accepted to replace the three other batteries
I have 350W of solar
(yielding max of 1.7kWh /day), with a Victron MPPT
controller, a Balmar
AT200 and a 614 external regulator
. We are barely at the dock
, but when we are, I have a programable Victron Multiplus Compact Inverter/charger 70A.
I have followed all Firedly recommendation as far as settings.
So... Have you experienced such longevity issues with these batteries
? what is your experience? do you follow the monthly maintenance/restoration process?
I m heading to the Pacific after moving up north the the Sea of Cortez
, but would like to get know if I should switch to lithium (Trojan Trillium) before we go to the South Pacific
All inputs are welcome. thank you.