ONBO 25C 850mAh 2S LiFePO4 Battery for DF Restricted Class

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  • Regular price $24.00
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Optimal low voltage (6.6v) battery perfect for the DF Racing line, great for hours of non stop sailing

Battery weighs approx. 48 grams and is DF Restricted Class Compliant

This battery includes a JR connector perfect for plugging into the switch leads on the DF95 & DF65

Battle tested in regattas by the DSNA staff and top skippers, holds charge consistently and will last for many hours racing/sail time with the DF class boats!

Suitable for many other racing classes as well


  • Model No.: ONBO850LIFE
  • Typical capacity : 850mAh
  • Typical Voltage: 6.6V
  • Dimensions: 18*30*55mm
  • Approx Weight: 50g
  • Continuous Discharge Current: 25C(21.25A)
  • Burst Discharge Current: 50C(42.5A)
  • Connector: JR connector


  •  1x ONBO 25C 850mAh 2S LiFePO4 Battery

Notes: Never fully discharge Lithium batteries. Must be charged with the appropriate 2 cell LiFe Battery Charger.


This product is classified as a DANGEROUS GOOD - It can ONLY BE SHIPPED VIA ROAD (standard shipping). Cannot be shipped internationally or by air (express shipping)


  • Batteries should NEVER be left unattended while charging.
  • Be absolutely sure that the Lithium Polymer charger settings are correct for the battery pack being charged – both voltage and current settings.
  • Lithium Polymer must be CHARGED and STORED in a fire-safe container like a Lipo Sack.
  • Do not charge batteries near flammable items or liquids.
  • Keep a dry fire extinguisher nearby or a large bucket of dry sand, which is a cheap and effective extinguisher.
  • Never charge inside an automobile even when parked.
  • KEEP BATTERIES AWAY from children and pets at ALL times.
  • Never discharge below 3.5V per cell as it may cause permanent damage and void warranty
  • Battery may explode if damaged or disposed of in fire
  • Never leave batteries inside a car on a hot day or any other place where temperature may exceed 140F / 60C.
  • Although environmentally friendly, lithium polymer cells must be FULLY discharged before disposal. Use a resistor setup (light bulbs, for example) to accomplish this, to avoid the possibility of a short-induced fire after disposal.
  • Immediately discharge damaged batteries at 1/2 C rate and dispose
  • Do not put the loose cells in a pocket, bag, or drawer where they could short-circuit against other items, or the battery tabs could be pressed against each other.
  • Take care that the cells are not punctured, especially by metallic objects like hobby knives.
  • If the electrolyte in the cells should get on your skin, thoroughly wash with soap and water. If in the eyes, rinse thoroughly with cool water. Immediately seek medical attention for this, or for burns.