What size battery charger???
Bought a 12v 18Amp battery to operate my mobility lift on the back of my truck.. Looking for a small battery charger to recharge the battery after 5 or 6 uses.... Have a big 12v charger for the garage...
Forum Discussion
I wonder how much juice that wheelchair lift consumes and for how long.
It's just a 35$ battery but it would certainly last longer if recharged more often than every few days.
If the battery were to die mid lift or lowering, I'd want some sort of backup method to raise and lower it, and this 'emergency' method would likely also provide some charging while the engine is running. Which might then allow driver to never put this AGM battery on a charger, which at least has a chance to get it near or to full charge, as the vehicle's voltage regulation never will, not even on a multi state roadtrip.
If both charging sources were employed the battery would be happier for even longer.
Mex in another thread, intending to respond to this one, brought up a 14.00v 7 amp power supply that looks like an inline power brick for a laptop. If it were actually 14v with 7 amps of output it would work pretty well.
while 7 amps is well above the 5.4amp maximum charge amps listed on the UB12180 battery, I regularly exceed that on the same battery, and by a good percentage.
I looked for such a 7 amp 14v dc power supply quickly, but they all came in over the price of the amazon linked charger whose '3 stages' could work better and be safer with less risk of overcharging should it be left on for too long, but instead would likely drop to float way too soon.
I have noticed that my 18AH AGM the amps will taper at absorption voltage to the 0.1 amp region, bottom out for 15 minutes, then start rising.
I suspect if I were to leave the charging source going once amps begin rising at absorption voltage, they would continue to do so while the battery heats up and this could perhaps lead to thermal runaway.
These little AGMS are not built like a mini Lifeline AGM.
It's just a 35$ battery but it would certainly last longer if recharged more often than every few days.
If the battery were to die mid lift or lowering, I'd want some sort of backup method to raise and lower it, and this 'emergency' method would likely also provide some charging while the engine is running. Which might then allow driver to never put this AGM battery on a charger, which at least has a chance to get it near or to full charge, as the vehicle's voltage regulation never will, not even on a multi state roadtrip.
If both charging sources were employed the battery would be happier for even longer.
Mex in another thread, intending to respond to this one, brought up a 14.00v 7 amp power supply that looks like an inline power brick for a laptop. If it were actually 14v with 7 amps of output it would work pretty well.
while 7 amps is well above the 5.4amp maximum charge amps listed on the UB12180 battery, I regularly exceed that on the same battery, and by a good percentage.
I looked for such a 7 amp 14v dc power supply quickly, but they all came in over the price of the amazon linked charger whose '3 stages' could work better and be safer with less risk of overcharging should it be left on for too long, but instead would likely drop to float way too soon.
I have noticed that my 18AH AGM the amps will taper at absorption voltage to the 0.1 amp region, bottom out for 15 minutes, then start rising.
I suspect if I were to leave the charging source going once amps begin rising at absorption voltage, they would continue to do so while the battery heats up and this could perhaps lead to thermal runaway.
These little AGMS are not built like a mini Lifeline AGM.
