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Company details

  1. Energy Equipment and Solutions
  2. also in
  3. Battery Manufacturer
  4. Green Energy Supplier
  5. Solar Energy Equipment Supplier

Written by the company

Unleash the power of energy storage innovation with BigBattery, America's source for Lithium Iron Phosphate (LFP) battery solutions. Driven by a mission to make energy freedom affordable and accessible, we engineer cutting-edge lithium upgrades for diverse applications, including Golf Carts, RVs, Boats, Industrial Equipment, Off-Grid Solar Energy Storage, and UL-certified home & Commercial Systems. From powering outdoor adventures longer than ever before to bolstering true energy independence for your home, BigBattery's commitment to affordability and sustainability empowers everyone to embrace a brighter and cleaner energy future. Forget the old days of replacing lead-acid batteries every few years, it's time for your decade of freedom.


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3.2

Average

TrustScore 3 out of 5

3 reviews

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3.2

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(3)

3 reviews in the last 12 months

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Rated 5 out of 5 stars

My NEXUS 2 & APEX off grid system have…

My NEXUS 2 & APEX off grid system have been phenomenal so far, and customer support has been with me from order to installation, which is awesome compared to crap I’ve ordered off Amazon prior.

October 12, 2026
Unprompted review
BigBattery logo

Reply from BigBattery

Thank you for the review! We're thrilled to hear your NEXUS 2 and APEX off-grid system has been performing so well. Providing reliable products backed by knowledgeable, accessible customer support, from purchase through installation, is exactly what we strive for.

We truly appreciate your trust in BigBattery and are proud to be part of your off-grid journey. Enjoy owning your power, and reach out to our team anytime if you need assistance.

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Rated 1 out of 5 stars

Big Battery Sucks

This has been my experience over the last almost 2 months. I ordered a set of lithium batteries for a scissor lift. After no contact post purchase for two weeks and no shipping notification I attempted to find out what was the delay. Nearly a week goes by and no one responds to my inquiries via email. I finally call in to discover that there were some sort of miscommunication between shipping and accounting. By that time I had to read other reviews about the lack of quality and customer service post purchase. So I decided to cancel my order. After canceling and waiting nearly a month for a refund I finally had to call again only to get excuses on why the refund has not been posted. And only after I posted a bad review did anyone reach out and apologize. Two weeks after and still waiting for a refund. Had to file a dispute with my credit card company. Unless you like gambling and losing, do not use this company!

September 23, 2026
Unprompted review
BigBattery logo

Reply from BigBattery

We sincerely apologize for your experience with BigBattery. The shipping delays, lack of communication, and extended wait for your refund are unacceptable and do not reflect the level of service we expect from our team.

We appreciate you reaching out to us directly and sharing the details of your experience. We will be reviewing this situation with our Customer Service, Shipping, and Accounting teams to identify where the process broke down and implement measures to prevent similar issues moving forward in our growth.

We understand your frustration and sincerely regret the inconvenience this has caused. Thank you for bringing this to our attention and giving us the opportunity to address it.

Rated 1 out of 5 stars

Big Battery

The following is my experience with Big Battery. I first purchased a lithium battery from Big Battery in 2022. I settled on Big Battery as I was interested in purchasing an American made product. I purchased the 48 volt gorilla battery. Shortly, after receiving the battery I was presented with a notification of recall. I was given three options, Option 1: return the battery for a full refund. Option 2: return the battery for repair. Option 3: upgrade to a new, larger battery for an additional fee. If I decided on option three, the new Battery would be sent to me and once I received it, I could return the old battery. This worked well for my situation as I am 100% off grid and rely for my electrical power from the storage battery. I chose option 3. As promised the new Battery was sent to me and once I received it, I packaged the old batteries and they were returned shipping paid for by Big Battery. The new battery I received was the Rhino battery 48 V 276 amp/hr. A few months after receiving the Rhino Battery, it began to deplete its charge in a short period of time. I keep records on each time I need to run a gas powered generator to re-charge the battery and over the course of normal use, I charge the battery once every five days. Suddenly, I am having to recharge the battery in a much shorter time period. The first response I received from the tech services department was that I had something on in my cabin that was making a large draw on the battery. After repeated assurances to the tech service department at all levels that there was very small amperage draw on a 276 amp hr battery, when everything is shut off in my cabin, I was instructed to open the battery housing. Inside, I found a failed bank of lithium battery cells. I was instructed to return the battery for repair. I was required to send photos of the battery and the packing method used, including padding and photographic evidence of the Battery in the box with acceptable padding, before I was sent a prepaid shipping label. Repair of the battery took several weeks. Following repair was a week of testing, then another week delay before the battery was finally shipped. The entire process cost me the use of my cabin electrical systems for a late summer and entire fall season. Four years later, the repaired battery has started to act in the same manner. Presently, when I shut off all electrical power in my cabin, the battery is drained in less than 24 hours. I once again called the technical services department at Big Battery. My experience was to be put on hold with music for a period of time. During the hold I was given a message that no one was available to take my call but if I would press the number two and leave a name and number, someone would return the call as soon as they were able. I pressed the number two. I was then placed back on hold with music. After listening to the music, I was given the same message. I was never given the opportunity to leave a message. I entered a loop hold, music, message, press, two, hold music, message, etc. Reaching the technical service department was impossible. I then started to contact all different departments within Big Battery, including billing, sales, any corporate extension I could find. No person answered the phone. I was always put on hold and given the same instructions. Finally I managed to leave a message with a person in sales who was able to contact tech services and have them finally return my call. As things have resolved, I have decided to purchase a new battery. I have experience with returning a battery for repair to Big Battery and at this point I choose not to repeat that experience. Unfortunately, my new battery will not be American made.

Update: Following Big Batteries response I will confirm they did offer a new Battery replacement. However after three problematic batteries why would I want another. As far as assistance with recycling, I have never heard back from them. Cost me an additional $477.00 to get rid of it. I offered to send it back if they provided a shipping label. Never heard from them. Would you not want to know what the failure was? Or see if I just don’t know what I’m talking about.

September 10, 2026
Unprompted review
BigBattery logo

Reply from BigBattery

Thank you for sharing your experience. We’re sorry for the frustration you experienced.

After reconnecting with you, our Customer Service Manager reviewed the situation and offered to replace your 2022-generation battery with a brand-new 2026 BigBattery NEXUS 2, with shipping covered by us. We also remained willing to pursue repair or replacement options for your existing unit.

You let us know that you had already purchased a replacement battery elsewhere and preferred not to proceed with either option from BigBattery. We respect that decision, and your remaining request is for assistance with the safe removal and recycling of your existing battery, which our team is working to address.

We understand why your past experience was frustrating, and we sincerely apologize for the inconvenience. We appreciate the opportunity to offer a current-generation replacement and remain committed to helping resolve the remaining battery-disposal logistics.

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