Tracer LiFePO4 12V 3.5Ah Battery

LiFePO4 batteries are the safest battery technology available. The output voltage is identical to SLA (Sealed Lead Acid) batteries, but they weigh approximately ⅓ of SLA. Built in Fuel Gauge...



LiFePO4 batteries are the safest battery technology available. The output voltage is identical to SLA (Sealed Lead Acid) batteries, but they weigh approximately ⅓ of SLA.

Built in Fuel Gauge - With the built in Tracer fuel gauge you can check the power level remaining in the battery. A touch of the button shows how much energy remains and whether you need to recharge.
Robust ABS Casing & Soft Grip Texture - The non slip soft grip rubber provides excellent grip. While the ABS construction provides excellent impact resistance and toughness.
Lighter. Smaller. Better. - Just ⅓ of the weight of a traditional sealed lead acid batteries. Gone are the days of carrying heavy lead-acid batteries. You won't believe the difference!
High Efficiency Charger - The compact 2A Charger (TR8204 included) will charge your battery quickly.
Flat Discharge - Brighter for longer - LiFePO4 technology gives a very flat discharge curve which means sustained power to the end of the cycle. If you are powering lights they will remain brighter for longer, giving you sustained performance.
Universal Connections Available - Tracer battery packs can power any 12V application. As standard we provide a Mini T-Bar to 12V Socket.
A selection of different connections are available to suit your application.
Certified Safe - All Tracer LiFePO4 batteries conform to standard UN 38.3 which is the ONLY relevant safety standard for lithium batteries. Our battery packs have been through a rigorous testing procedure by UN certified inspectors. You should NEVER handle a non-certified LiFePO4 battery pack.
Safety Features - Integrated Electronic Battery Management System (BMS) provides the following protection:

  • Overcharge & over-discharge protection

  • Thermal protection

  • Over current protection

  • Short circuit protection


Type -Lithium Iron Phosphate (LiFePO4)

Capacity - 3.5Ah +/-5%

Charge Time - 4 - 5 hrs

Charger - 2A Charger

Life - 1400+ Cycles

Dimensions (") - 3.5 x 5.7 x 2.6

Dimensions (mm) - 90 x 145 x 65

Weight (oz) - 21.5

Weight (grams) - 608

Max Continuous Discharge Current - 6A

Max Peak Current (for 10mS) - 13A

Nominal Voltage - 12.8V

Discharge Cut-off Voltage - 10V

Charging Voltage - 13.8V

Temperature Range (charging) - 0°C — 40°C

Temperature Range (discharging) - -10°C — 60°C

Self Discharge - <0.5% per day

Seller Info

Wylies Outdoor World

Rating: 5 Star based on our Social media ratings.

Price Match Promise!

Found it cheaper? We will price match and give you 5% off a future order!

Trade Discounts

We offer discounts for Scouts, Forrest Schools & other outdoor activity groups

The Personal Touch

Speak to Wylies Outdoor Worlds owner and chief product tester Drew Wylie directly

What makes us different from other retailers?

We test as much gear as humanly possible on our own trips 4 nights a week, every week... Regardless of the weather! We also offer more free after sale services than any other retailer in the UK such as free training, one to one, tutorials, group meets and product demos, with the cost covered by our sales! When you buy from us rest assured that our recommendations have been used heavily in rain, windy conditions, sleet, snow and of course the 15 degree Scottish summer! Add to your kit, don't replace items that don't stand up to the task!

Our standard uk mainland delivery is 3-5 days (usually 2-3 working days). Orders are normally dispatched within 24 hours.

We offer free standard delivery for orders over £70. This will be discounted at the checkout.


By Law we are required to verify your age, we do this by requesting you to email photo ID with proof of your address to:
As a subject line please input "AGE VERIFICATION AND YOUR ORDER NUMBER e.g. #1635

Without this we will not be able to ship out your item and cancel your order after 7 days