In Praise of the T-1275 for an RV House Batterry
Everyone has his choice of battery that has worked well for him. Few mention the T-1275.
Mex calls it a "scrubber battery" which it is. It also appears in some golf cars as a pack of four to make 48V. (Alternative to six 8-volt batts)
Some here might remember I got a couple of these in 2013 used, out of golf car service (batteries built in 2011) and "recovered" them. The golf car place seller said they were about 86% from good as new the way they test them.
I managed to recover them a little better than that over several months, so they got better in SG and tested at 90% of rated (135AH out of 150AH) in early 2014.
I never did get them equalized in SG. Always there are some cells better than others, but always the same cells. This does not seem to matter.
I have used these for doing some 50-90s in a row, many times since then, and "recovered" them later at home each time. They always recover to where I got them early 2014. I have not had the "Screwy 31" experience, but they do need caring for if you want them to last.
I have come to depend on these batteries as reliable for anything I do. They take high amp draws from the microwave EG, and bounce back. They have a low voltage sag compared with my 6s doing high amps. Not quite as low as an AGM, but pretty darn good.
I notice they bounce back slower than the 6s do, which takes a bit of getting used to, but they do come back all the way. I guess it is their chemistry.
I now trust these batts totally.
They hardly ever need water (but they do get there), while my 6s need frequent topping up with water.
I keep them going with equalizing voltage sessions after each camping trip doing 50-90s, and by keeping them on a Float charge between trips. They are as good now as they were three years ago after I got them back up to 90% after their two years doing golf cars. I think they will last forever!
I do not think they are just an over-grown T-105 either. These guys are special. What I like is the feeling of total confidence in them now, that they have earned, while I am getting nervous about the same age 6s. The two T-1275s are my "go to" batteries. :)
I think if you got one brand new, you could put it in your will to be passed on. :)
Mex calls it a "scrubber battery" which it is. It also appears in some golf cars as a pack of four to make 48V. (Alternative to six 8-volt batts)
Some here might remember I got a couple of these in 2013 used, out of golf car service (batteries built in 2011) and "recovered" them. The golf car place seller said they were about 86% from good as new the way they test them.
I managed to recover them a little better than that over several months, so they got better in SG and tested at 90% of rated (135AH out of 150AH) in early 2014.
I never did get them equalized in SG. Always there are some cells better than others, but always the same cells. This does not seem to matter.
I have used these for doing some 50-90s in a row, many times since then, and "recovered" them later at home each time. They always recover to where I got them early 2014. I have not had the "Screwy 31" experience, but they do need caring for if you want them to last.
I have come to depend on these batteries as reliable for anything I do. They take high amp draws from the microwave EG, and bounce back. They have a low voltage sag compared with my 6s doing high amps. Not quite as low as an AGM, but pretty darn good.
I notice they bounce back slower than the 6s do, which takes a bit of getting used to, but they do come back all the way. I guess it is their chemistry.
I now trust these batts totally.
They hardly ever need water (but they do get there), while my 6s need frequent topping up with water.
I keep them going with equalizing voltage sessions after each camping trip doing 50-90s, and by keeping them on a Float charge between trips. They are as good now as they were three years ago after I got them back up to 90% after their two years doing golf cars. I think they will last forever!
I do not think they are just an over-grown T-105 either. These guys are special. What I like is the feeling of total confidence in them now, that they have earned, while I am getting nervous about the same age 6s. The two T-1275s are my "go to" batteries. :)
I think if you got one brand new, you could put it in your will to be passed on. :)
