About Payment 
 Shipping & Cost
 Battery SDS
 Battery Terminology
 Battery Knowledge
Privacy Policy
 Export restrictions


Shopper Award
Security Verified Seal

Smart Charger (0.5A) for 3.7V Li-ion/Polymer Rechargeable Battery Pack - CE Listed -

 Part Number: CH-L3705SM-V1
Your Price: From $18.95 to $26.95

Product Options



  • This smart battery charger designed to charge 3.7V Li-Ion/Polymer battery with capacity ≥ 700mAh.
  • Automatically cut-off power when battery pack is full at 4.2V
 Input      100 -240VAC 50/60Hz / US AC power plug
 Output      4.2V
 Charging Current
  • 0.5A
  • Charge time = (Ah rate of the pack x 1.5) / 0.5A charge current
 Protection      Reverse Polarity and over charge protection
 LED Indicator
  • Red =Charging
  • Green = Fully charged
  • Dim Green/no LED - you are trying to charge a fully charged battery.
    • Solution - discharge/drain the battery first and recharge again.
 Dimension(LxWxH) 88mm(3.5") x 52mm(2.0") x 30mm(1.2")
 Weight 4.9Oz (139grams)
 Certification CE listed


Connector Options

  • Option 3: 3.5mmx1.3mm Male Plug 
  • Option 4: USB Male Connector
  • Option 5: 1.7mm x 4 mm Male Plug   (Digikey#CP-013-ND, Manufacturer#PP-013)


  • Check battery polarity before connecting to charger.
  • This is for 3.7V Li-Ion/Polymer battery with capacity >700mAh
  • Indoor use only!
  • Do NOT open the cover as it will void the warranty.
  • This charger is for charging rechargeable Li-ion battery with PCB ONLY.
  • One year warranty.
  • California residents: Warning: Cancer and Reproductive Harm - See Prop 65 Warnings

Related Products

Product Reviews

(1 Rating, 1 Review) Average Rating:
Will continue to buy online, good service.
bobcatlights (Welling, OK) 6/13/2012 5:11 PM
Will continue to buy online, good service.
What to consider when designing Lithium Batteries?
Bluetooth Technology for Lithium-ion/LiFePO4 Batteries
UN 38.3 Safety Test

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

If you want to set up your own lab, we also provide UN38.3 & IEC62133 equipments and onsite training. Email us for the quote and lead time.
Lithium Battery Shipping Regulation
Recommendations on How to get ≤30% Rated Capacity for Shipping
Thermal Abuse Test for IEC62133
Mailing Lists