12V 20Ah Lithium LiFePO4 Deep Cycle Battery, 2000+ Cycles Lithium Iron Phosphate Rechargeable Battery for Solar Power, Lighting, Outdoor camping, Power Wheels, Fish Finder, Built-in 20A BMS

picked up this battery to replace a lead-acid battery in my ecoxgear party speaker. it was rated at 7ah and stated it'd last 3 full days of use... which we all know is a lie, we'd get max 2 6-8 hour days use out of it after charging it for 3 days solid. this 10ah lifepo4 battery has blown that completely out of the water. its a direct fit replacement with the same voltage but a much larger capacity. so far on 1 single charge it's lasted about 8 days solid use 6-8 hours at a time with 3/4 of the charge still available for use. insanity. very well worth the buy.

After 2 years, today the product stopped charging. I charged it overnight and did it various online technique to reboot the bms but did not work.Update: the company rep help rectify the situation by giving me a new battery. I am please with the customer services. Do note: if you drain the battery completely, make sure you know how to reset the BSM.

I love how long the battery lasts I play my home made radio 13hours straight off the battery it's amazing I might get another to explain the tim from charging for longer trips

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.

I’ll be honest, I was a bit hesitant when buying these two lithium batteries for our electric wheelchair, since the original ones were lead-acid. But I’m super impressed by the quality. The wheelchair lasted all day at a large theme park without any issues, and it kept going strong for a few days after that. These lithium batteries not only have a much longer lifespan, but they also don’t damage as easily as the acid-based ones. While they don’t warn you when you’re about to run out of battery, I think if you consistently charge them, you’ll be just fine. Highly recommend these batteries; they’re a great purchase!

Some 5 years ago I bought this Cyberpower 1500AVR UPS, hoping that since my load expectation was unlikely to be even 1/2 its capacity, it would last many many years. Well the UPS its self has lasted, but the original Sealed lead-acid batteries did not! And the worst part was the machine' never gave any warning of how bad the batteries were, despite its very elaborate and informative display. And of course the longevity of replacement batteries of the same type never lasted much more than 1-1/2 years! So now, before buying what would have been my 4th replacement set, I tried these. I can't give it 5 stars, because I have only given it a partial test. But they worked, and I was able to run approximatly 500 watts of load, including an old Dell Desktop computer, multiple monitors, all my internet equipment (routers, modem, etc.), an audio mixing board and sound module, and a handful of additional loads, for 10 minutes with no problem. Andi if it is to be believed, the display on my UPS indicated I had plenty of time left! The only test I have not done, is to let the load run until the UPS has to quit, and then see how well it recharges. I have heard that due to a slightly different expected maximum charging voltage from an UPS (designed for the sealed Led Acid batteries), that the LifePO4 batteries will not "fully" charge. So that is the reason why I can't give it 4 stars yet. But bottom line, I don't need "100% maximum full charge". I just need the batteries to work and get me through short power outages, with enough time to safely shut things down if the outage is expected to go on for a long time. So, since I could not get a clear answer as to whether these batteries would even WORK in my UPS (CyberPower did not even answer my inquiry, and neither did Nermak), I thought it would be useful to recommend that they likely will work, and should give us all better longevity then the sealed lead-acid cells we've all been using.

Lightweight and runs fishfinder a long time

Battery worked perfectly for what I wanted it for. Size, battery life, and time it’s takes to charge were all exactly what I neeeded.