NERMAK 12V 10Ah Lithium LiFePO4 Deep Cycle Battery, 2000+ Cycles Rechargeable Battery for Solar/Wind Power, Lighting, Power Wheels, Ride-on Toy, Fish Finder and More, Built-in 10A BMS

Bought for peg perego ride ons. They work great and so much longer life than lead acid. They did charge fine with a 10amp charger without issue. So far so good. I do love how small and light lithium batteries are.

works good used on vexliar pro pack fishing cam and FLX12

My UPS stopped charging the batteries and failed, it triggered the low voltage protection of the batteries. Fortunately the battery stayed safe and I replaced the ups.

I’d recommend against usage for “legacy” UPS lead acid battery replacement, specifically the common case of quantity 4 or 2 battery systems. These usually are setup with the batteries in series (4x12v = 48v, 2x12v=24v). You are likely better off throwing the legacy lead acid battery UPS away, and buying a lifepo4 based UPS. Even the Lifepo4 portable batteries like the power 1000 have UPS capability. The ups devices that start with a lifepo4 energy source usually have passive and active cooling for the battery array, in addition to the inverter components. There are a few problems with using these in a legacy lead acid battery UPS: 1. The continuous output current is far lower than lead acid batteries. The typical Lifepo4 compatible battery option is rated at 10amp continuous. So, in a 4 battery series system, you’ll get at most about 135w continuous output per battery - so about 500watt max. You won’t get anything near the potential needed in common 1000w, 1500w, and 2000w ups. 2. The BMS present in the lifepo4 batteries generally needs at least exposed passive cooling, or even active cooling. These are enclosed package batteries, so cooling is limited at best. 3. With 4 12v lifepo4 batteries in series, you’d basically need another BMS to manage the 4 batteries, or the discharge and charge levels between batteries becomes imbalanced. 4. The charging circuit will not fully charge lifepo4 batteries, in most cases. Lead acid vs. lifepo4 have different max voltage levels. 5. The legacy ups doesn’t know the proper estimated runtime or charge level of lifepo4 batteries. This is a relatively minor issue compared to above. Technically, a 48v lifepo4 pack that fits most UPS battery compartments could be built to handle several of the issues above. As an experiment, I fully charged up 4 of these individually outside a UPS, then installed them in the ups. Verified the output of the pack was approx 55.8v. The charge/discharge circuit ”popped” with the telltale electronics burning smell, with smoke, when a 200w load AC power fail test was triggered. These batteries may be ok for some cases, like the single battery backup common to home alarm system panels.

Due to frequent pwr outage in S.Cal I was looking for replacement batteries for two UPS units. These APC-brand units are over 10 yrs old but are working like champs. The lead acid batteries have been replaced twice and each last roughly 4-5yrs. Initially I was not sure about the charging compatibility b/w Lead Acid and LiFePO, but after reading other ppl's reviews and internet posts, I ordered two battries and surely enough these two units were put to work and test in realtime. Happy to see at one long outage they lasted twice longer (from 3 hrs to 6 hrs) on a relatively low load of 110-130Watts. The battery is fully charged within 1hrs when power is back. It costed a little more than lead one but for the extra $ it's worth. Beside it's half the weight of lead acid ones, when you get older you will appreciate the weight difference. I used LiFePO in RC-controlled airplanes so I love these powerful but lighter one. Seller is very responsive to my concern and timely addressed my inquiry. Highly recommended.

Just a few days into owning this battery, and so far, so good! It’s a perfect match for my UPS 550 (model B0019804U8—the same trusty unit I purchased years ago). Compatibility Check: The UPS recognizes and charges the battery without a hiccup. System Integration: The data cable accurately reads the battery's charge capacity—no issues there. Performance Under Load: The UPS does its thing like a champ, seamlessly drawing power from the battery without errors. Now, onto the one thing I can’t tell you yet: whether this 10Ah battery offers longer run times compared to the 7Ah OEM version. Honestly, I’ve never paid much attention to runtime—I just configure the system to keep my home server running until it gracefully shuts down. (It’s tucked away in a basement closet, doing its thing.) For comparison, I have another UPS 550 with a 6+ year-old OEM battery, but let’s be real—it’s way past its prime and totally untrustworthy for runtime comparisons. The Bottom Line: If you’re looking to save some cash on a battery replacement, this one is a solid option. It’s significantly cheaper than the APC-branded OEM battery and only slightly pricier than the absolute bargain options. That said, I’d think twice about going for the cheapest of the cheap—after all, this is a battery we’re talking about. You don’t want something leaking, exploding, or catching fire! Even if it’s not a “true” 10Ah battery (who really knows?), it’s doing a great job in my book so far.

Very pleased. I used these batts to replace heavy lead batteries for my GoPed 750 ESR. It's almost the OG of electric scooters and have given mine, a new life. I know can travel further and faster with the new batts and they are crazy light weight. I can lift my scoot on the train with ease. I rarely give five stars but this is one purchase that really made a difference.

después de meses usándolas, diversos cortes de energía al en estos meses, puedo decir que respaldan mucho mejor que las que traía mi UPS de ácido, sin duda compraré más este tipo de productos por su relación precio/calidad