Question Wondom Bms

[djsedaw]

Was looking on the Wondom website and they have some battery management units, was wondering if any of the could be used in handheld building?

http://store.sure-electronics.com/list/5/46

5S 18650 5-24V INPUT LITHIUM BATTERY BALANCE AND PROTECTION EXTENSION BOARD - BCPB3[720]

• 5-24V Wide Range Charging Voltage
• Hybrid Charging Sources
• Supporting Extension Board with
• Dual 5V 2A USB Discharge Ports
• Multi-discharging Ports
• Solar Charging Supported
• Large Capacity with 5 cells 18650 Batteries
• LED Indicators for Battery Status
• Balance Protection
• Short Circuit Protection
• Over-temperature Protection
• Over/Under Voltage Protection
• Output/Input Over-current Protection
• Over-charge and Over-discharge Protection
• Weight: 168g/0.37lbs (±10%)
• Size: 4.8 x 3.6 x 1.28 inches

 

[Wesk]

Sure, you could use something like that but it's quite large and you'd also need additional regulators to set your required voltages. A PMS from the Bitbuilt store has all of this on a single board and is only a fraction of the size.

 

[djsedaw]

Thanks, it's just there cheep to get in the UK.

 

[Aurelio]

That thing plus regulators capable of stepping down 18.5V (5S) will cost you basically just as much as a PMS and won't work as well

 

[Stitches]

I'm just imagining all the heat coming off that board and whatever poor heavy duty regs you'd try to run the system off. You'll need some serious airflow and a pretty hefty case, no PLA for you for sure, it'd warp in an instant.

Maybe give that plan a miss eh?