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High Power Polymer Li-Ion Pack: 14.8v 4000mAh (59Wh) with Balanced PCM / Fuel Gauge, 20Amp Rate (4.8)

Your Price: $129.95
In Stock

Product ID # 3947
Part Number:

Lead Time: 5 Business Days

Quantity Discounts

5 to 20$126.05
21 to 50$123.45
51 to 100$120.85
101 or more$116.95


*Important Shipping Regulation This pack is for testing (prototype) only. It has not been UN38.3 tested yet.  Read more...
Voltage       14.8v (working)   17.4 V ( peak)   9.6V ( cut-off)
Capacity       4000 mAh   ( 59 wh)
Prewired       Charging/Discharging Terminals: 6" 14 AWG  open end wires
  • 1x PCM with balance function installed to protect
    • Overcharging beyond 4.35V/cell
    • Over-discharging below 2.40V/cell
    • Over-drain beyond 20 A
    • Must wait min of 30 minutes after battery is fully charged to allow the pcm to perform balance function on all the cells within the pack.
Max. Discharging Rate      20Amp limited by PCM 
Dimensions(LxWxH)      140mm x 50mm x 43mm   (5.51" x 2.0" x 1.7")
Weight      481 gram (17 Oz) 


  • DIY RC Car and RC Plane
  • RC Robot


  • Please note this battery is for someone that is familiar with Li-Ion battery characteristic as we are not responsible for any damages or losses caused by using the battery pack
  • Please never discharge the battery pack beyond its Max. rating
  • Must read here before place an order. Please download fill the form and fax back to 510-439-2808. Attn: BatteySpace-Tech. 
  • We reserve right not to sell the battery to anyone if we feel they cannot handle Li-Ion battery safely
  • For safety warning please see the link here
  • Please allow up to  2-3 weeks after receipt payment before delivery because it need to be tested before shipping
  • California residents: Warning: Cancer and Reproductive Harm - See Prop 65 Warnings

Related Products

  • Please choose our 1.8A  Smart Li-Ion battery charger to recharge this battery pack. 
    • The estimated charging time is 4 hours
  • Need a connector ?  please find one here
  • Fire Retardant Bag:295mmx230mmx75mm --- Reduce the chance of damage if caught fire
    • This Fire Retardant Bag (Li-Ion Safer Bag) is intended to reduce the chance of damage in the event of catching fire.
    • Must locate & seal the battery pack in the bag  while charging / leaving without any attention

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We own a national standard UN38.3 testing lab. We can provide UN38.3 test service to our customer.

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