Battery charger power requirement VRLA 24 volt.

[ericmark]

Mother has an electric wheel chair and I have plugged it in after each use to recharge with what looks like a switched mode charger.

I had been doing some tests in the garage which were completed but so I do not lose the plug in energy meter I plugged it into a socket and plugged the wheel chair back in through the energy meter, curious I looked at power being used, remember the chair has only been off charge a few minutes.

69W quarter of an hour latter 55W, this seems a huge amount to keep to valve regulated lead acid batteries charged, 24 volt not sure AH would guess around 20 what do you think?

 

[JohnW2]

69W quarter of an hour latter 55W, this seems a huge amount to keep to valve regulated lead acid batteries charged, 24 volt not sure AH would guess around 20 what do you think?

Does it draw any power if you disconnect the batteries?

Kind Regards, John

 

[ericmark]

Slowing power used over an hour, seems a bit high when chair charged to start with, unplugged wheel chair from charger 5W ratted at 8A but green light showing which it says means charged.

 

[stillp]

Maybe your energy meter is calibrated for a sinewave.

 

[ericmark]

Dropped to 20 watt now,

however it was only off for a few minutes I suspect faulty batteries, they do an annual check, but don't test batteries, it is not used much, but if the batteries fail it is rather heavy to push.

 

[ericmark]

It would seem that the battery had not be float charged for some reason as this was the display this morning, it had gone to 5 watt which it also uses when unplugged. So no worries.