4 Pack Demonfire 10440 Rechargeable Li-Ion Batteries w/PCB 3.7V 600mAh & Charger


  • 600mAh Li-Ion Rechargeable batteries with PCB
  • These batteries are NOT regular AAA batteries and can only be used in devices that specifically accept high voltage 10440 batteries
  • Built-in protection circuit module (PCB) increases length of battery by ~2mm
  • Includes quad battery storage case to safely and securely store and protect your batteries
  • Includes Demonfire D1 charger
  • US based seller dedicated to the highest standards of quality and service

8 in stock

SKU: DF10440BT-C Category:


This 10440 battery charger combo includes one Demonfire D1 rechargeable battery charger and four Demonfire 10440 rechargeable lithium ion batteries.

Note: These are NOT AAA batteries. These batteries runs at 3.7 volts. Please make sure that your device is designed to operate using 10440 batteries.

Demonfire 10440 Battery Charger

Fully compatible with our Demonfire 10440 batteries, the included D1 charger will conveniently charge your rechargeable 10440 batteries.  Additionally, the D1 charger features charge indicator lights to signal when each battery is fully charged.  That way, you can safely remove your fully charged batteries without danger of overcharging.

10440 Battery Specifications:

  • Capacity: 600mAh
  • Nominal Voltage: 3.7V
  • Dimensions: 46.1±0.2mm Length, 10.3±0.2mm Circumference
  • Operating Discharge Temperature: -20 to 60 Degrees Celsius
  • Standard Charge: 0.2C CC/CV to 4.2V, current ≤ 0.01C cut-off
  • Cycle Life: 300 cycles
  • Weight Per Battery: 8g


Battery Charger Specifications:

  • Compatible with the following IMR/Li-ion/LiFePO4 batteries: 18650, 18500, 18490, 18350, 17670, 17500, 16340, 14500, 10440
  • 4.2V for lithium batteries and 3.0V for LiFePO4 batteries
  • DC input port size: 3.5mm x 1.35mm
  • Input: AC 100-240V 50/60Hz 0.2A, DC 8-12V 1A
  • Output: 3V 0.5A, 4.2V 0.5A


Each Combo Includes:

  • 4 Demonfire 10440 600Mah Li-Mn Button-Top Batteries
  • 2 Quad Battery Case (each case holds up to 4 batteries total)
  • 1  Demonfire D1 Battery Charger