Compact 12V 12Ah LiFePO4 Battery for Fish Finder, UPS, Lighting, Kayak

I am using these on some old UPS that needed batteries. The 20 A continuous BMS makes them a much better choice over most other batteries - aside from Dakota Lithium that are at least 2x the cost, I haven’t found any other in this size that are 20 A. Also these are 12Ah that fit into the same size as a 10Ah battery. So they have more continuous Amps and more capacity. Note, these will still limit your UPS (to 240 Watts if one battery and 480 Watts if 2 batteries), but that is the nature of these smaller LiFePO4 batteries and not a fault with the batteries themselves. I simply label the UPS with the new limit so I don’t forget. I’ve used 4 of these batteries in 3 UPS so no issues so far.

I have been using this to power my Garmin 93sv and GT-54 UHD transducer. This batter has worked great. Considering the price, this battery is hard to beat. This lasts me all day on the water and holds the charge consistently above 12 volts all day. I have had no issues so far, going on about 5 months of use so far.

This battery is for my Hook Reveal 7ts fish finder on my kayak. . After using a different brand for similar battery (12V 7.5Ah) for a year and half, that battery would only last 3 hrs. Since it was 30 $ battery I told myself for 1.5 years that was ok and ordered another. The new battery was used twice and only lasted 1.25 hrs and then almost 2hrs. I fish 4-6 hrs, so I sent it back and began a search for similar battery that was same size as it has to fit in my kayak battery holder in the sealed hatch. I found this brand XYNZ and was happy to find the right size with more power 12.8 V 12Ah and consistent reviews and for only a few dollars more. It arrived a lot early then originally schedule (Yeah). Was packaged very well and came with a nice little manual. I followed the instructions and charged it up. Took it out to fish and it lasted around 4 hrs without any problems. So I didn’t charge it to see how long it would last and took it out on day 2 and it lasted another 4 hrs. So I took it out on day 3 and fished 5 hrs without any problems. At this time my friend was here and used his tool and it was 11.8V. So I put it on charge. My friend also helped me to set up the voltage to display on my fish finder so that I know when it gets to 12V and can charge it up when it reaches that amount. I will follow up if I have any problems and also will follow up in 1-2 years to let you know if it’s still going strong. My other battery should have lasted a lot longer than 1.5 years! This company sounds good and has a 3 yr replacement on it.

This battery is doing a great job in the UPS battery backup I put it in. I let it charge up and now I'm seeing how long it lasts running my router and fiber internet box. I unplugged the UPS and let it run 5 hours on battery and then plugged it back in before it shut off, which is over twice as long as it would run before. I'm also looking forward to the longer life span of the LiFePO4 battery. I've had to replace lead acid batteries after 5 years of use and at that point they are either completely dead or have almost no capacity left. Overall I'm really happy and I will be getting more of these for my other backup units.

About 6 months ago (Nov 2024), I purchased 2 of these for a small standing scooter. They were the 10A BMS model. They worked perfectly in the scooter, and I performed a test in my UPS and they seemed to work fine at the load I had them at (~230W/9.5A), so I planned to purchase more for two UPSs I need to replace the SLA batteries for. I come to find they've since upgraded this to 20A BMS, works for me, I bought 4. What actually arrived was not what I expected though. Two of them were the 20A model, and two were the older 10A model. There's no actual markings on the battery themselves that I saw which would indicate the BMS size, so I referenced the spec sheet on the included user manual. I ended up exchanging the 10A ones, and the replacements that arrived were also the 20A BMS I expected. They are now installed in two APC UPSs (1000VA and 1500VA) and work fine. The load on them is about ~250W each, so the current draw should be well within the BMS tolerance. I haven't tested the actual runtime with these yet, but I don't expect worse runtime than with the AGM ones. Anyway, I recommend these batteries as safe alternatives to AGM/SLA: They are lighter, and aren't fire-prone like other Lithium technologies; however double check the BMS rating in the manual when you get them, to confirm they're the 20A BMS, assuming you need that size. EDIT: 27 Sep 2025 I finally got around to testing the UPS. At 230W load (~35% as reported by UPS), I was able to get just over 56 minutes of runtime with an APC Back-UPS XS 1000. That's not a typo, nearly an hour of runtime! I can't remember what runtimes I had with SLA, but various online calculators say to expect around 20 minutes of runtime with that load. The test was simple, and involved running a stopwatch on my phone while letting my computer sit at the BIOS setup until it died (to keep idle power usage fairly constant and reduce risk of data corruption from unexpected power loss).

Bought 2 of these to convert my Pride GoGo Elite Traveler 2 over to Lithium batteries. You will need a lithium battery charger also. Don’t use the charger that came with your scooter it’s for lead acid batteries only. I bout the Expert Power 25.6v 5 amp lithium battery charger Model #EPC245. It works perfectly with these batteries.

Bought 3 of these and couldn't figure out why I was running out of battery halfway through my flights. I finally put a voltage meter on them during charging to understand what was going on. Either a bad batch of three or incompatibility of their BMS systems with well respected tried and true Noco 5 and Noco 10 chargers in lifepo4 mode. The XZNY top out at 12.5v (less than a 20% charge) which was enough to power up my instruments but obviously left me high and dry no pun intended 😲

SLA batteries in UPS usually last 2-3 years and I have had some leak on occasion. No leaks with lithium. While an SLA battery can deliver considerable amps under load, the batteries provided with common UPS are usually undersized and do not provided more than a few minutes of backup during a power outage. Lithium LiFePO4 (LFP) batteries provide a more constant voltage and greater depth of discharge (DOD) than SLA, with some limitations: The BMS limits the maximum discharge current; usually 10 amps for a 10/12Ah battery. That limits the total UPS load to around 125 watts, considerably less than the UPS specification. Most UPS are designed to charge an SLA battery at around 13.4 to 13.6V, and will only charge an LFP battery to around 75-90% capacity. Also, a "compact" LFP battery will physically fit as an SLA replacement in many small UPS, but a regular sized LFP battery is larger and will not fit. I avoid the problem by strapping on an external LFP battery to the UPS, with selection dictated by load requirements and battery BMS lmits. Some larger LFP batteries have screw vs spade terminals, for which I make short ring-to-spade jumpers. I have swapped out SLA batteries in all of my UPS and have been very pleased with the performance.