(25 Reviews)

12V 190Ah Dual Purpose Lithium Battery

12190-DP

An Absolute Game Changer!

With an amazing 190AH’S of reserve capacity and 1500 CCA we are confident the raw power of this new battery will take your next trip on the water to a new level! With built in low-temp charging protection! (Bluetooth Enabled)

Millertech Dual Purpose meets and exceeds any charging or cranking requirements actually needed to work with the Mercury 4 stroke up to 250hp. We have many customers using them to start there motors since 2016 with no issues.

UL Certified; ANSI/CAN/UL 1973:2022 Ed.3


Customer Reviews

Glenn Bochenko
Rating: 5/5
Awesome Battery! Excellent customer service.
Customer service was excellent. They actually answer and you get to talk to someone! It’s what made me switch to Millertech. I’m using this lithium for my house battery. Thank you again and the battery is working 100% as you advertised.
Fri Jun 26 2026 19:06:23 GMT+0000 (Coordinated Universal Time)
Jim
Rating: 5/5
Crazy good battery warranty.
I could not find a better battery warranty. 10 years non-prorated. Rock on!
Tue Jun 02 2026 19:38:49 GMT+0000 (Coordinated Universal Time)
Donald
Rating: 5/5
190AH dual purpose battery
Received the battery and installed in my Ranger Z521. Went to the lake for 4.5 hours and purposely turned on everything in the boat. Two Graphs, FFS, live wells aerators oxygenator and rod box vents. In 4.5 hours only used 15% of battery charge. I’m pretty confident I can run all day and not run out of power. Saying goodbye to the AGM battery. And by the way, the app is wonderful.
Mon Apr 20 2026 21:16:29 GMT+0000 (Coordinated Universal Time)
William
Rating: 5/5
MILLER TECH LITHIUM BATTERY
Received quickly and spoke with staff at miller tech prior to ordering to be sure I got exactly what I needed for my boat. Very polite and helpful staff
Tue Feb 24 2026 23:48:40 GMT+0000 (Coordinated Universal Time)
Douglas Smith
Rating: 5/5
7 Months later
Been running this battery 7 months now and still very impressed with the performance! Millertech Battery 70% 132.6/190.0Ah ( 5 hrs 41 Min) 57.4 Ah used 09:24 - 13.2v 100% 189.1/190Ah 11:31 - 13.1v 15:05 - 13.1v 70% 132.6/190.0Ah All my boat electrical need run on this battery. Garmin Echomap Ultra 126sv (2) 106sv (1) LVS32 (1) LVS34 (1) Livewell 1000 gph (1) Baitwell 500 pgh (1)
Sat Nov 22 2025 15:23:44 GMT+0000 (Coordinated Universal Time)
Michael Budnaitis
Rating: 5/5
So far so good
Only been out couple times since installing. After 6 hours on the water running 3 screens and live well, only brought battery down to 80%. Phone app is great to monitor battery but ultimately time will tell. Extremely satisfied to this point.
Fri Aug 08 2025 00:51:22 GMT+0000 (Coordinated Universal Time)
Gerald Accardo
Rating: 5/5
Great Stuff
These are great batteries and a good company to work with
Tue Aug 05 2025 13:57:44 GMT+0000 (Coordinated Universal Time)
David Robison
Rating: 5/5
Customer Service
MillerTech has bar none the best customer service ! Roman exceeded my expectations with a proactive response in getting me a much needed battery to my fishing location in Pennsylvania. My hats off to all employees who work for this company. Keep up the great work!!! Thanks Roman!!! David Robison
Mon Jul 07 2025 00:00:00 GMT+0000 (Coordinated Universal Time)
Jon Byrd
Rating: 5/5
Cranking battery
Bought the 12 volt 190 ah lithium battery, customer service was great, had battery the next day, fished a 8 hour tournament running all my graphs ( 4 of them ) with livewell pumps going all day and still had 60% left. The Bluetooth information Paige is a great feature as well
Thu Jun 26 2025 01:46:55 GMT+0000 (Coordinated Universal Time)
Dan Goodman
Rating: 5/5
Couldn’t be more pleased with all the batteries I purchased, outstanding products and an exceptional company thank you!!!
Thu May 01 2025 01:46:40 GMT+0000 (Coordinated Universal Time)

What the pros are saying about MillerTech batteries