Reply To: battery charger question

[kevin]

August 20, 2023 at 6:27 pm

32v Would be a normal initial supply voltage for a 24Vdc system. SLA batteries bulk charge at 14.4Vdc hence at least 28.8Vdc would be a required minimum, float charge runs at 13.7Vdc per battery once full charge has been reached.
I have not worked on the Harmer lift but from what I posted I deducted that the charger has multiple LEDs which display charge state and issues.
Some lifts use an intelligent charger connected directly to the batteries, other models have a dumb charger which supplies a certain power level which the PCB then manages to charge batteries at the required levels. From the manual I would suspect that the Harmer requires its own intelligent charger.