Protection Circuit Module (PCB) with LED Fuel Gauge for 10 cells (12V, 5A limited) NiMH/NiCd Battery Pack (#6520)

Protection Circuit Module with LED Fuel Gauge For 12V NiMH/NiCd Battery Packs

This protection circuit is specially designed for 12V NiMH/NiCd Battery pack with upto a max of 5.0A discharging rate.  

• Keep 12V  NiMH/NiCd Battery pack from over-discharge (10V)
• No over-charge protection
• Must use the correct voltage charger to properly charge the battery pack!
• Max discharging /charge current <5.0A.
• PCB will cutoff at 10V±0.3V to protect battery pack from over discharge
• 5 LEDs display battery pack's voltage (press button to turn on LEDs indicators, it will turn off when you let go)

• <10.5V±0.5V	LED off
  10.5V±0.5V to 11.5V±0.5V	LED1 (Red) on, must recharge battery ASAP
  11.5V±0.5V to 12.5V±0.5V	LED1 (Red) and LED2 (Yellow) on, battery need recharging soon
  12.5V±0.5V to 13.5V±0.5V	LED1 (Red), LED2 (Yellow) and LED3 (Green) on
  13.5V±0.5V to 14.5V±0.5V	LED1 (Red), LED2 (Yellow), LED3 and LED 4 (Green) on
  >14.5V±0.5V	LED1 (Red), LED2 (Yellow), LED3 , LED 4 and LED 5 (Green) on,  battery is fully charge
  	NO LED - disconnect the load (device) and recharge the pack ASAP!!

• To Reset the pcb:
• Connect a 12V charger to "Reset" the PCB once the PCB is open when battery pack voltage drop below 10V±0.3V
• If you have a multi-voltage charger, it might not "reset" the PCB, you can "reset" the PCB by:
• Connect the charger directly to the Batt+ and Batt- of the PCB
• If you cannot remove the load, then you can add an on/off switch like this to "reset" PCB and start charging:
• battery-------->PCB------> switch --------->load
                 |
                 |—>charger

Features:    

• Apply for 10 Cells NiMH/NiCd Battery pack with discharging current  <5.0A
• Dimension (LxWxH): 50mm(2.0") x 30mm(1.2") x  10mm(0.4")
• Weight: 5.6 grams (0.2Oz) 
• Need 12V NiMH / NiCd battery pack for DIY? Please order from
• 12V NiMH Battery pack series (must not drain battery pack > 5.0A)
  
• 12V NiCd Battery pack series (must not drain battery pack > 5.0A)

Please connect battery pack with the circuit as specs.   Please click here to download specification with wiring diagram  

Warning:

• Misusing PCB may cause battery damage or explode.  We are not responsible for any damage caused by user.
• Don't use this PCB with Li-Ion / LifePo4 battery pack
• Must charge battery up to 12VDC minimum
• Must disconnect load from PCB to "Reset" PCB before charging
• Since this PCB does not have over-charge protection function, must use our 12.0V NiMH/NiCd smart charger to recharge 12V battery pack.