12V 100AH Intelligent Lithium Iron Phosphate Battery (12100L)


The Workhorse

Lithium Batteries contain no poisonous lead, and no acid, and do not create gases during charge, as traditional Lead-Acid batteries do. Compared to lead-acid, Lithium Iron Phosphate batteries are also extremely lightweight, have a much lower self-discharge, do not sulfate, and are environmentally friendly.


Voltage 12.8V
Capacity 100AH
Weight 32 lbs
Dimensions 13 × 6.5 × 8.5 in
Chemistry LiFePo4
Efficiency 98%
Memory None
Low Battery Alarm Yes
Max Charge/Voltage 14.6V
Peak Discharge 300A-1-2 sec
Cut-off Voltage 10.5V
Max charge/Discharge Current 100A
Operating Temp 32F – 130F
Low Temp Charging Protection Yes
Connection Capability 4S-4P
Cell Type Cylindrical
Warranty 5 years

WARRANTY: Millertech Energy Solutions warrants each MillerTech branded battery sold by MillerTech or any of its authorized dealers or distributors worldwide, to be free of defects for a period of five years from the date of sale. Within the warrantied timeframe, subject to the issues listed below, manufacturers will repair or replace the battery and or parts of the battery if the components in question are defective in materials or workmanship. Batteries are designed to replace lead acid batteries and should be used as drop-in replacements for lead acid applications.

NOT COVERED BY THIS WARRANTY: The manufacturer is not obligated to warrant the battery in question if defects are related to damages caused by abuse, neglect, or from the following:

  • * Damage from shipping, loose terminal bolts, or corroded hardware.
  • * Manufacturer codes tampering or removal
  • * Failure to properly install the battery, in addition to keeping the battery properly charged and maintained.
  • * Breakage from collision, fire, or freezing which includes damage from extreme heat or cold, improper storage, water damage, or tampering.
  • * A defective (SOC) meter will not affect the performance of the lithium battery, therefore the (SOC) meter is not covered by the MillerTech warranty.
  • * The warranty does not cover a battery reaching its normal end of life which may occur prior to the warranty. As stated above. Depending on the application a battery can reach its normal life before the end of the applicable warranty period. A battery can deliver only a fixed number of usable amp-hours over its lifetime and is considered to have reached its normal end of life if the application used up all of those amp-hours, regardless of the time the battery has been in service. Therefore manufacturer reserves the right to deny a warranty claim if it determines the battery to be at its normal end of life, even if the claim is lodged within the applicable warranty period.


EMAIL:  [email protected]

If it is determined that your battery requires further inspection, arrangements will be made to ship it to the MillerTech manufacturing site. Proof of purchase is required and should include the original invoice and serial number.

Customer Reviews

Based on 5 reviews
Lealand Hansford
Lithium Debate!

I’ve been debating purchasing lithium batteries for almost two years! Weighing the pros and cons and if the hype was really legit. Well, here’s my hype, the 12v 100ah intelligent lithium is unbelievable! I had just in last two weeks fished two big tournaments and was on the 36v Ghost trolling motor hard. The first tournament when I was done still had 89% left the second tournament I had 86%! Definitely worth money!!

Chris Howard

Incredible speed and communication for delivery.

Ken Roberson
Gifted a friend

Like mine so much, sent one to a friend.

Jason F
Game changer

Impressed? Yes. I ordered this battery because I was tired of getting hardly no life out of my lead 12v on the other end of my 55lb Minnie. This beast first and foremost arrived super fast. Packaging was on point. It also charged flawlessly. First time out for a quick run the motor ran nonstop for 3 hours and the battery was still at 94% when I headed in. So far this was a great investment and has exceeded my expectations. Bartle doo!

Cole Garland

This battery here is on year two of powering up my 55lb Thrust Terrova that’s mounted on my Hobie Pro Angler 14. The most recent trip to Lake Saint Clair I ran for miles & used spot lock all day while being on the lake for 9 hrs & still had 72% left in the tank! Amazing product.

What the pros are saying about Miller Tech batteries

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