Any one know how to tell what firmware version is installed on your 24T? I see there are some newer (i think) firmware available for the LCD and the main unit but there are no release dates for the firmware and I can’t find out where in the unit it can be displayed.
It flashes on when booting up.
Thank you Dave - hope you had a good weekend.
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Where did you buy your BMS -24 from?
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I need to type 20 characters so now I can say “David”
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David: what does the new firmware do for the BMS 24?
Version History
Software Version Description
V1.05 Released first time
V1.06 Fix press STOP enter into sleep mode, and Beeper & LED warning.
V1.07 Support LTO battery, model is BMS24T
V1.11 Negative temperature can be measured.
V1.12 Add charge protection, Don’t charge under 2℃
V1.13 (Hardware V2.2) Add display module, improve voltage bar graph display, the lowest
negative 20℃ can be detected
V1.14 for LCD Fix the charge and discharge WH bug
V1.15 for LCD SOC can be setup to 0%
V1.16 for LCD Start automatically on battery type and cell count setup interface,
need not press START button.
V1.21 for LCD
Fix a bug when display temperature difference at F.
Fix a bug on adjusting balance start voltage on LiTo battery
Add balance control item in storage status on Program Setup interface
—balance in Storage on or off
– balance in Charge on or off
– balance in Discharge on or off
Charge status: charge current displayed over 1A
Discharge status: discharge current display under-1A, such as -10A
Storage status: current displayed between -1A ~ 1A
So current shunt and current sensor wire must be connected to BMS main unit.
Improved SoC of LiTo battery
V1.22 for LCD and
V1.18 for main unit.
Improved SoC arithmetic
Fix a big when over discharge resume
Version 3 is out but I don’t know if it can be loaded onto older 24T’s or not???
Version History
Software Version Description
V1.05 Released first time
V1.06 Fix press STOP enter into sleep mode, and Beeper & LED warning.
V1.07 Support LTO battery, model is BMS24T
V1.11 Negative temperature can be measured.
V1.12 Add charge protection, Don’t charge under 2℃
V1.13 (Hardware V2.2) Add display module, improve voltage bar graph display, the lowest
negative 20℃ can be detected
V1.14 for LCD Fix the charge and discharge WH bug
V1.15 for LCD SOC can be setup to 0%
V1.16 for LCD Start automatically on battery type and cell count setup interface,
need not press START button.
V1.21 for LCD
Fix a bug when display temperature difference at F.
Fix a bug on adjusting balance start voltage on LiTo battery
Add balance control item in storage status on Program Setup interface
—balance in Storage on or off
– balance in Charge on or off
– balance in Discharge on or off
Charge status: charge current displayed over 1A
Discharge status: discharge current display under-1A, such as -10A
Storage status: current displayed between -1A ~ 1A
So current shunt and current sensor wire must be connected to BMS main unit.
Improved SoC of LiTo battery
V1.22 for LCD and
V1.18 for main unit.
Improved SoC arithmetic
Fix a big when over discharge resume
V3.0 Update hardware and software at the same time. V1.22 version discontinued.
I haven’t looked at the web sit in a while. It lists the revision history.
I sent the question to Jason Wang who is usually pretty quick to respond.
王军荣 <[jasonwang3a@163.com
Got this reply from Jason Wang on the question of upgrading the firmware on the BMS-24T from 1.22 to 3.0:
NO, 1.22 and 3.0 have different hardware, on V3.0 manual, you can find the update information.
thanks. Jason Wang