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Stay Powered This Winter with BigBattery Ethos, Now UL9540 Certified with EG4 Flexboss18 & Flexboss21
BigBattery Products Engineered To The Highest Quality Standard — Now ISO 9001 Certified
Introducing The Most Affordable Off-Grid 15kWh Home Battery, The Nexus
Take Full Control Of Your Husky 2 Wherever The Road Takes You
Upgrade Your Cart Fleet Performance With Eagle2 Drop-In GC2 Replacement
Upgrade Your 24V & 36V Equipment To Our Eagle2 LiFePO4 Batteries
RV, Van & Campers
1x 12V HUSKY2 INV + 1x 12V VICTRON MP II 3000
With Victron 12V MultiPlus-II 3000W Inverter/Charger
SKU# K0734
$3,250
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Why Us? Hear From Them
Latest reviews
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"I've been on solar/wind for 25+ years. My old system was 24V's flooded lead acid which requires much maintenance. I love my new 48V lithium batteries they function much better with less maintenance. I did have an issue with the Growatt inverter. Working with Dylan from BigBattery and James from Growatt we got the issue taken care of. They were professional and great with assisting me with the problem and between the three of us its solved.
Updated review: I've updated my system and added two Mustang 7Kw batteries to my system with the original Kong Elites which are discontinued. I had to upgrade to a larger inverter and Dylan recommended the 12000 XP EG4 and I'm so happy he did. After some fine tuning which he helped me with we got everything smoothed out and running. I love this setup it's easy to moniter from my phone or PC or with Dylan at BigBattery or Colton/Jacob
at EGe4. They've all been wonderful and continue to be. Thank You for all your assistance gentlemen."
foster kp1
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Verified Customer
"My Big Battery system has performed flawlessly since installation in 2022. The additional performance of the Lithium batteries is amazing. Dylan was very helpful troubleshooting a recent charger problem. I would recommend a Big Battery system to anyone. Thanks Dylan"
Jim Putnam
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Verified Customer
"My first warranty interaction with BigBattery was unexpectedly positive. I have had awful experiences in the past getting solar equipment warranty replacements from other companies. My inverter failed and I was worried about warranty replacement of an extremely heavy(165lb) inverter. Dylan at BB helped me through the entire process, description, diagnosis and replacement procedures. I was very disappointed to find out my inverter was no longer available. Dylan made me aware of this and got approval for what may be the most cost effective and modular inverters(EG4 6000xp’s). I am grateful that Dylan helped get me back off grid. Thank You Dylan and the BigBattery team for making a bad situation into positive encounter!"
Dustin McGuire
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Verified Customer
"Great Upgrade! I add their 48v lithium conversion kit to my golf cart and Im loving it. The battery takes up half the space as the old lead acid batteries and remove so much weight. i have to be careful not to burn rubber now! much faster than it used to be and I hardly ever have to charge it. I wish I would have got this battery sooner. i got the battery within a week of ordering and only took a couple hour to do the swap. if you want performance or just need new batteries, buy from big battery. Im not an electrical wiz but after a few questions to the sales team and a youtube video I was more than comfortable swapping it on my own. Great Company"
Tim Hugi
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Verified Customer
"This company has been awesome. I purchased 48V falcon elite kit with the charger to convert my club car. This battery weighs about the same as one of the 8 volt lead acid batteries but about 8 times more on the run time. You are losing about 350 to 400 lb of weight when you switch over. Went from lead acid to the falcon battery It's been night and day. It took me about 2 hours total That includes cleaning out and washing the battery box area where the battery sits in the cart.They were there for support every step of the way. (Dylan was an A+ person) He was my sales contact. Always had answers for any of my questions along the way. I would rate this a five-star experience"
tim stephens
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Verified Customer
"I want to thank all the people at BIG BATTERY, I had purchased a 48 volt Falcon elite kit for my golf cart,wow!what a difference from the 6 acid core batteries,
I used it for a while and ran into a problem they worked with me and solved the issue under warranty, I would definitely buy another battery from them.
Thanks again BIG BATTERY!!!!"
randy salmons
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Verified Customer
"Excellent customer service. Easy to work with. Dylan was very helpful with resolving and answering all of my questions and issues overall very happy with my experience with BIG Battery, also would highly recommend their products."
César Ley
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Verified Customer
"Good quality product. Good support."
Baxter Tidwell
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Verified Customer
"Bought 2 48volt batteries to replace lead acid batteries in golf cart. Kit came with bus bar and all wiring. Very easy to install. Very satisfied with purchase. Thanks Big Battery"
Barry Brouillard
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Verified Customer
"Great experience from initial call with questions re making sure I was getting the right batteries and charger for my specific needs. Everything I needed to make the conversion was in my package. Simple instructions made the conversion easy. Have had the batteries in my cart for over a year and would highly recommend this conversion for everyone. All the advantages listed on their website of lithium batteries vs lead acid are absolutely true."
Roger Adams
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Verified Customer
"I bought 4 LiFePo4 batteries to convert my Polaris Ranger EV. Great service. Their installation video was very helpful. Really excellent product, shipping, support, for a very reasonable price. The Ranger is so much lighter now with a big increase in power."
Laurie Pitman
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Verified Customer
"I called and asked questions they had great tech help and customer service. I ended up ordering a 48 volt battery pack for my golf cart and water resistant charger kit. Was an awesome price and even better product. I have been super happy with the battery pack and not having to constantly add water to the old lead acid batteries."
Monty Nash
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Verified Customer
"I picked up a couple batteries and a charger from these guys about a year ago now. Super high quality and easy installation in an older electric golf cart. Would definitely recommend and use again."
Jon Smith
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Verified Customer
"Big Battery made converting our 48v lead acid EZGO cart to lithium a breeze. Our cart is lighter, faster and the range went up dramatically using just a single Falcon Elite battery. The only change I had to make was add a 48v to 12v converter to run the headlights. Very happy with this purchase."
Eric Smith
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Verified Customer
"I recently installed a new system using 16 of the new BigBattery ETHOS modules and it has been working PERFECTLY... Installing the modules and controller was a breeze as everything is plug and play."
David Mahlmeister
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Verified Customer
"Best thing I ever did for my cart! After years of battling lead acid batteries I changed to the Eagle 2 batteries and could not be happier. The cart is 400 pounds lighter and runs circles around other carts with lead acid batteries. I will be adding a third Eagle 2 battery in the near future."
James Salter
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Verified Customer
"Their battery has been working well with my off grid system for a year now."
Kenton Mast
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Verified Customer
"Excellent customer service and response time from Big Battery. I have two of their batteries in my cart and have had zero issue with them since final install. When I look to further upgrade my cart I will use their products without question. Thank you."
Evan Carey
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Verified Customer
"We have two large Base Camps in the wilderness of Alaska where we use solar power. We switched from lead acid batteries to Big Battery Owl's and it is amazing the difference that we have had. We went from 16 lead acid batteries per camp to four Owls and we produce more power than ever before. The Owls are 52lbs each and our lead batteries were 115lbs each. Cutting down on weight in a wilderness camp is a huge savings! We went from haling 3680# of batteries in planes and boats to hauling 416#'s of Big Batteries. I highly recommend these Big Battery to anyone thinking on changing from lead acid to lithium, plus they are a great company to work with and are very proficient."
Brad Duncan
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Verified Customer
"We're live board cruisers and I bought 4 BigBattery batteries for my 41' sailboat in 2020 and couldn't be happier with them!"
Glen Fromm
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Verified Customer
