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Hey no problem, thanks for you reply , ref interrogating the circuit's … the silicone PCB that’s a real pita to get off… “ cream “ on hear wrote up a thread commenting on it .. it a Mission.. hey on wards and upwards 👆🏼

Battery capacity is 9% on the bike ! … that was with 41.8 vdc …. changing to the green light lit on the non smart charge … looks likely that the cells are not charged! Any more thoughts?

The non smart charger I’ll check tomorrow 👍

I get no battery charge status leds , with the charger on / off ( the non smart one that did charge ok) … battery voltage is now at 42v . Does this function only work with the BMS woke up and a working comms via the giant “ smart charger “ ? . I disconnected the non smart charger, plugged the...

Does it only show the battery state … whilst charging? Or

Battery appears to be fully charged….. but the leds on the battery don’t appear to show state of charge .. what is the button press sequence for getting the charge of battery status? Thank you

Has increased to 1.5A

Wired up charger to discharge port … it charging @ 0.8 A …. The voltmeter is connected to the main battery posts ..35.0 volts … I’ll monitor it to see how it behaves.

Thank you… I’ll try that … btw Mine has this wiring arrangement. Do you mean these are the discharge wires ? … the larger red and black to the output black connector ?

Thank you for your reply .. regarding using another ( non smart battery charger) … would you connect it to the BMS Red +( small .5mm sqd wire) and the Black - ( again .5mm sqd wire) ? Does this then still use the BMS to still be “active” ? …. Or not …. ? Would you recommend going directly to...

No the battery does not work on the bike .. ( it’s at one bar in the leds and voltage is 34v) … I will measure the individual cells. I have bought a 42v charger… would you connect it to the .5mm red wire + and the .5mm black wire - …. That go to the BMS circuit ( in the centre??? Or directly...

Hi , Excellent in depth diagnostics on the battery BMS .. Can you please help:- I have an EnergyPak 400 and a DPS-83CB A charger . 41.8v 2A ouput The charger light flashes red and does not output.. battery is currently at 34v . I have carried out continuity tests on the 5 wires of the...

Thank you 👍… I looked through the posts and there’s no specific information on tests in the 5 pin charger circuits… is there any signal function that is available to interrogate ref the the handshake to switch the charger output turn on ? … is it the BMS output to charger signal that needs a...

Hi , Great post on the charger … can you help:- I have a Giant DPS-83C A charger that has no output its spec is 41.8 v @ 2 amps . Tested the continuity of the 5 wires of the Neutrik 5 way to PCB all good. Voltages as follows photo 1 … I cannot see any in line fuse on the PCB ? Any...

Hi Newbie here, Giant DPS-83CB A 41.8 v @ 2A I have a Red flashing led .. no charge to battery ! Can anyone help with the functionality of the wires 5 way Neutrik connector. I have tested the :- ( Charger plugged in & On ..) Pin 1 = 34.5 vdc Brown 1mm sqd wire Main + to battery . Pin...