Chargers In Series

Why do you want/have these tiny chargers? Are you running electric scooters or bicycles?

- Nosy

2oldman wrote:
No, but you'll only get 1.5 amps.

+1, good to go.

With a golf car that has six 6s in series, you can put a 12v charger across one pair of 6s, so you could put three 12v chargers to work with one on each pair of 6s.

Seems like a bad idea to me.

If the charger output is not floating, it definitely won't work. (If they have a grounded plug, there's a reasonable chance the negative output is tied to ground. Even without a grounded plug, the output may not float, though it probably does.)

The smart aspect could work somewhat at odds with each other if they decide to change modes at different times (due to slight variations in output or whatever). There's lots of chance for them to get confused. Probably this wouldn't cause damage to anything, but they may well decide to shut down due to thinking the battery is bad or something. It could also be at least theoretically possible for them to be damaged due to excessive voltage on the output terminals, but I wouldn't expect a good charger design to die from even the full 36V there.

If you can divide your 36V battery up into 12V segments, you can of course charge them independently (if inconveniently).

RJsfishin wrote:
I need a 36v 3-4 amp batt charger.
I have 3 new 1.5 amp 2 stage chargers sitting doing nothing.
Any reason why these cannot be connected in series to make 1 36v charger ?

depends how the voltage sensing works ... dumb chargers that are just a transformer and a diode won't care, but a regulated electronic charger might not like having it's 0v potential raised above 0v.

cheaply made non-isolated chargers might even have the mains ground or neutral tied to the 0v rail (negative connector that is.) connecting that 0v rail to the 12v rail of another charger could get interesting.

price isn't bad on this unit:
36v lead acid charger

If you want a real answer, google 'chargers in series'

If they were dumb chargers in parallel it would work but you'll exceed their voltage specs and likely smoke them if you try to put them in series.

No, but you'll only get 1.5 amps.