Experiences or opinions on the Chargery BMS?
- Thread starter Dzl
- Start date
no if you just use the shunt that came with the chargery you dont need to calibrate. Only if you change shunts would you need to do that. I found the two shunts (with two separate BMS orders) from them to be spot on with my master shunt.
Anyone have any insight into how much power the Chargery BMS (bms itself, display, and relays) consumes?
Hmm...I guess what I wanted to ask is actually this:
Does anyone know if the Chargery BMS has a self-induced "sleep" mode with very low power consumption if the battery is discharged below the Cell Undervoltage Protection level?
I know there is a "STOP" button to manually put the BMS to sleep, but that also cuts the Discharge relay. I was wondering what would happen if the load discharges the battery below the Cell Undervoltage Protection and the BMS remains connected to the battery. Does the BMS self-consumption drain the battery further down?
Does anyone know if the Chargery BMS has a self-induced "sleep" mode with very low power consumption if the battery is discharged below the Cell Undervoltage Protection level?
I know there is a "STOP" button to manually put the BMS to sleep, but that also cuts the Discharge relay. I was wondering what would happen if the load discharges the battery below the Cell Undervoltage Protection and the BMS remains connected to the battery. Does the BMS self-consumption drain the battery further down?
There is no sleep mode that I know of however you can infinitely set balance parameters so that it does not balance below a certain level. Also the screen has a timeout so Im guessing there is very little draw at that point. I cant figure out how to expressly test its draw since it takes power from all 11 of my cells.
Good point. I think I fried mine or else I would test it. Anyways If its not balancing and back-light is off power consumption would be minimal.
Steve_S
Offgrid Cabineer, N.E. Ontario, Canada
You can also set it to just balance during Charging / Discharging or when it's in Storage mode (low use minimal amps drawn or just simply OFF.
I stop my balancing at 60mv and only balance in storage or charge. feeling my way around the high and low settings for charge and discharge cut off. Wish the chargery showed when it was balancing. I just taped one of the temp sensors to the BMS box to see it heat up and know it was balancing.
To that end have you seen evidence of your batteries being balanced. Mine ran for hours and cell voltages seemed to change very little.
thedodgersonline
New Member
- Joined
- Nov 19, 2019
- Messages
- 204
Hi
Just had a discussion with Wayne Chang @ Chargery and this is his response regarding Bluetooth on the BMS
"hi Richard,
yes,
we finished the hardware design and manufacturer last year, now we plan to develop the software that execute on mobile phone,"
So now I want to see if the hardware is available - at least
Regards
Is it or the relays generating any noteworthy heat? Considering placing the 16T in a plastic box (https://www.planomolding.com/sportsman-s-trunk-large) and would like "all things battery" inside, while staying as cool as possible.
@Steve_S can you confirm that the SoC that is displayed by the Chargery BMS is computed from the voltage of the battery and not from Coulomb counting with the shunt? That is the impression I got when I tested it and if it's the case it seems pretty useless (because of the super flat voltage curve of LFP batteries).
Also I could not update the BMS with the new software yet, I tried with two computers but either the COM port didn't show up or I got a "Update timeover" popup, am I the only one who ran into these issues? If not and you have a fix I would appreciate the help!
Otherwise it seemed pretty reliable to me during my first tests and does a good job at protecting the battery: overvoltage, undervoltage, voltage difference between cells and overcurrent tested with success.
Also I could not update the BMS with the new software yet, I tried with two computers but either the COM port didn't show up or I got a "Update timeover" popup, am I the only one who ran into these issues? If not and you have a fix I would appreciate the help!
Otherwise it seemed pretty reliable to me during my first tests and does a good job at protecting the battery: overvoltage, undervoltage, voltage difference between cells and overcurrent tested with success.
The main unit is generating some heat, especially when balancing, but I guess that if you do a perfect top balance of your cells on your own and only perform occasional balancing on your watch while disabling the balance function of the BMS it would not generate so much heat.
Steve_S
Offgrid Cabineer, N.E. Ontario, Canada
It uses the shunt.
Re the update, I used my laptop to update mine (Windows-10) and had an issue with a port conflict due to my Midnite Classic Software (Adobe Air) and another driver which had a grab on the com ports.... I dumped that software and had no issues with running the upgrade. You have to make sure you do not have any other driver grabbing the com port assignments.
Steve_S
Offgrid Cabineer, N.E. Ontario, Canada
Well done Video Aleks2a, I'll watch the rest a bit later.
Jason is working on Solid State Relays (Bi directional) and a few other things, like new shunts.
I'm using TE/Kilovac Energy Savers & Dongya Energy Saver Relays. Only 200A.
What relays are you using, would like to compare and see their specs.
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