PowerTex Batteries 12V 20Ah LiFePO4 Lithium Iron Phosphate Battery

  • Sale
  • $119.99
  • Regular price $149.99

  • SAFETY - PowerTex LiFePO4 Lithium Iron Phosphate Batteries come standard with a built-in BMS (Battery Management System) that protects it from the most common causes of battery failure like overcharge, deep discharge, overloading, overheating. It essentially regulates the amount of power coming out of the battery to protect the Lithium cells, equipment and user.
  • SAVING MONEY - Our Drop-In LFP Lithium Iron Phosphate Batteries have 10X the lifespan of the average sealed lead acid battery and can be charged/discharged repeatedly. With exceptional longevity and low $ cost per cycle, our LFP batteries end up costing the user less than SLA over time.
  • LIGHTWEIGHT - Our LiFePO4 battery is only a 1/3 of the weight of Lead Acid batteries, which makes it the ideal choice for fish finders, solar, campers, electric scooters, trolling motors, lighting, kids ride-on toys & More!
  • EFFICIENT - Lithium Iron Phosphate battery’s flat discharge curve holds above 12V for up to 90% of its capacity usage providing astronomical boosts in run-time compared to only 50% in Lead Acid.
  • WARRANTY - We stand by and believe in our products and think you should too! That's why we test all batteries before shipping and offer a 3 Year warranty.
  • CHARGING - A LiFePO4 charger is highly recommended since SLA chargers might not reach the optimal 14.4V-15V LiFePO4 charging voltage. This might result in the LFP battery never reaching it's full charge and thus lowering the performance.

Battery Features

  • 100% pre-delivered inspection, with safe and reliable long-term quality assurance.
  • Highly-waterproof designed and rated above IP65, this battery can be used normally under rainy conditions in the outdoors.
  • Longer service life than lead acid batteries, with a life expectancy of about 5-10 years.
  • Low self-discharge rate, a fully charged lithium battery will perform after a year without use.
  • Maintenance free, easy to use.
  • Up to 4 batteries can be connected in series or parallel.
  • Eco-friendly without any corrosive liquids or harmful heavy metals.
  • Intelligent (BMS) battery management system electronic chip can monitor battery status in real time, auto-detection for abnormal voltage and capacity.
  • LCD screen to track days in use, voltage & capacity.
  • Over-charge protection
  • Over-discharge protection
  • Over current protection
  • Cell balancing function
  • Over temperature protection


Model PTL1220
Dimensions LxWxH 7.1 x 3.0 x 6.6 inches
Terminal Internal Thread
Weight 6.3 lbs
Voltage 12.8 Volts
Capacity 20 Amp Hours
Power 256 Watt Hours
Discharge Current - Continuous  10 Amp
Discharge Current - 5 Sec. Burst 20 Amp
Max Charging Current 10 Amp
LiFePO4 Cell Model 26800
Number of LiFePO4 Cells 16
Cut-off Voltage 10V
Internal Resistance ≤30mΩ
Charging Ambient Temperature
32℉ - 113℉
Discharging Ambient Temperature -4 ℉ - 131
Charging Voltage
14.4V ~ 15.0V
Float 13.6V ~ 13.8V
Capacity Affected by Temperature  104℉ 101%
77 100%
32 93%
-4 65%
Residual Capacity After Storage at 77   3 Months 87%
6 Months 74%
12 Months

Supporting Documents

Spec Sheet Product Manual

Customer Reviews

Based on 8 reviews
Harvey Craft
My Thoughts

I do not understand all of the tech involved in these new batterie. I read the booklet that came with it and am still confused.
What kind of charger do i need to maintain it?
Will my computer controlled charger work?

Jeff Malvin
Looks promising

Haven’t had a chance to use it yet but it’s all charged up and ready to use on my electric reels for deep drip fishing…

Alan Powell
Works Great With Fish Finder

Got this for my Garmin fish finder and it works great. Was able to fish all day without having to recharge.

Brady Blackmore
Great product and support

Was not sure which battery to get for my solar powered radio, they were able to help me understand which watt hour option would suit best.

Katey Bauer

Used on my daughters powerwheel