Miady 12V 15Ah Lithium LiFePO4 Deep Cycle Battery,3000 Cycles Rechargeable Battery For Small UPS,Fish Finder,Power Wheels,Scooters,Solar Power Built-in 15A BMS（5.9" L x 3.7" W x 3.9" H）
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Availability:
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Arrives
Aug 16 – Aug 17
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Size: 12V-15Ah
Features
- Superior Performance:Miady 12V 15A battery delivers high energy density, long cycle life, fast charging speed, and outstanding safety features. It is equipped with an advanced Battery Management System to prevent battery failures caused by overcharge, over-discharge, over-current discharge, short-circuit, and self-balancing cell voltage. (Note: This is not a starting or power battery.)
- Long Cycle Life: Lithium batteries have 3000+ cycles and a 10-year lifespan, while traditional lead-acid batteries have only 200-300 cycles, resulting in a lower average cost of use. Their low self-discharge rate ensures hassle-free storage for up to 1 year. Additionally, lithium batteries' volume and weight are approximately 1/3 of those of lead-acid batteries.
- Wide ApplicationsThis LiFePO4 battery is widely used in various applications: For Small UPS,Fish Finder,Kids Car,Scooters,Solar Panel Power,small Trolling Motor,Camera,Speaker,Gate Opener,Emergency lighting (LED strip etc),12V router,Kayak,Backup power,Ham Radio,Home Alarm ,Fire Security Systems,12V Router and more.
- Reliable Recharge: Our 12V 15Ah LiFePO4 battery supports flexible series/parallel configurations, allowing connection of up to 4 identical units to achieve 48V-51.2V max voltage and 60Ah expandable capacity, while requiring zero maintenance (e.g., no water refilling) compared to lead-acid batteries. (Battery charger is not included)
- 12-Month Assurance: For any inquiries regarding your purchase, please reach out to us through either of these convenient methods, click the "Ask a question" on our storefront,or Go to "Your Order" in your account, select the relevant order, and choose "Contact Seller".
Brand: Miady
Size: 12V-15Ah
Battery Cell Composition: Lithium Polymer
Product Dimensions: 5.9"D x 3.93"W x 3.7"H
Terminal: F2 Terminal
Automotive Fit Type: Universal Fit
Manufacturer: Miady
Brand: Miady
Size: 12V-15Ah
Battery Cell Composition: Lithium Polymer
Product Dimensions: 5.9"D x 3.93"W x 3.7"H
Terminal: F2 Terminal
Automotive Fit Type: Universal Fit
Manufacturer: Miady
Model: lifepo4
Item Weight: 3.58 pounds
Item model number: MI-LFP15AH
Batteries: 1 D batteries required. (included)
Manufacturer Part Number: LFP15AH
Date First Available: September 18, 2024
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Aug 16 – Aug 17
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Size: 12V-15Ah
Excellent battery for the price. Solid construction, seems to hold its charge well.
Reviewed in the United States on July 6, 2025 by Shannon Paul Keck
So I previously trashed this product in a similar way to the other 1 star review due to my lack of knowledge on how these batteries work. These batteries have internal battery management systems (BMS) which cutoff the current at 10V and cause the batteries to read 0V. I was under the impression this was either a "recommended cutoff" on the datasheet or the BMS would cut the current and then restart a moment later like many other BMS's do. When looking online, many people stated the drop to 0V was part of the protection circuit and was permanent: This isn't true! These batteries are designed to go into a sleep mode when they reach 10V and will wake up when voltage is applied from a charger. This is actually an incredibly useful feature for my application of using these as a portable power bank for heated motorcycle gear. I no longer need to worry about over discharge. I can just let the internal cutoff activate if the cells get too low (obviously this isn't preferred, but will work in a pinch if I run the batteries longer than normal). Now here's the issue: The charger I'm using, which is a smart charger for sealed lead acid (SLA) and Li Ion batteries used in cars, needs to detect the voltage coming from the battery to turn on charging. As a result, it does not send out any voltage of its own and will not wake up a sleeping battery. To turn the batteries back on, I VERY quickly tapped a 9v battery across the terminals of the battery (another 12v battery would have been better), positive to positive and negative to negative. This supplied the needed voltage to wake up the BMS and allow the 11.2 or so volts remaining to be present on the terminals once again. Now my smart charger could detect the battery and charge it like normal. Yes, the battery had 11.2V when the cutoff is 10V. This is not a defect in the BMS, rather, the voltage will sag under load to 10V, the cutoff will activate, and when the battery is woken up it will once again read the non-sagging "open circuit" voltage as there is no load any more. Overall I'm very happy with the 3 batteries I bought which arrived with identical voltages, perfect for parallel configurations. They have more power than I was expecting and should easily run my heated gear for 2+ hours on max heat. Being able the use a standard SLA charger and having an automatic low voltage cutoff makes these a versatile power source for many projects. Just make sure you have a way to "wake up" a battery that has reached the low voltage cutoff; either another battery or a non-smart charger. Here's the result of my discharge test for those who are curious about how much power these have. I'm using 3 batteries in parallel for roughly 18Ah of capacity (Series configurations are not recommended without a BMS, and even then, these batteries have internal BMS's so most people wouldn't recommend series configurations at all. I'll leave you to decide if you want to run series or not). I was powering a heated vest which consumes 5 amps at max heat and has 5 power settings. You can very roughly estimate that each power setting draws 1 amp (setting 1 is 1 amp, setting 2 is 2 amps, etc.), but the actual current draw is likely higher based on my testing. Here's the results: Heat 1 for 1.5 hours Heat 2 for 3 hours Heat 4 for 2 hours At this point the low voltage cutoff activated around 6.5 hours after I started running the heater! Obviously this isn't even remotely scientific as I used different settings and the only power setting that I can check the current draw accurately on is setting 5 which draws 5 amps (other settings use PWM so my cheap multi-meter is pretty useless). I'm pretty happy with these results and this pack should power my gear for a few hours with medium heat settings. *****Old Review: I used these batteries to build a large battery pack (wired three in parallel). They charged up just fine, but near the end of their first discharge (powering a heated motorcycle vest on medium heat, about 3 amps) all three cells dropped to 0.1 volts and ceased functioning. At my last voltage check (about 15 minutes before failure) the cells read 12.1 volts, well above the 10 volt discharge cutoff. Because the load was spread over the batteries, I had roughly 1 amp on each battery, which is within the 1.2 amp standard discharge rating on the datasheet. These batteries are rated for a continuous discharge of 6 amps each which I never hit in my testing. Really disappointed in these batteries.
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Reviewed in the United States on November 28, 2019 by Mark
So far, this has been an AWESOME drop in replacement battery for the Fishman LoudBox Mini Charge. For those that don’t know, LoudBox Mini Charge is an SLA battery powered acoustic instrument and microphone amplifier. Very versatile and great sounding mobile amplifier for busking, smaller venues or stage monitoring. Trouble is, the SLA 12V/5Ah OEM battery is not good quality. Brand new it barely delivered 2Ah usable power for the amp and after just 1 year capacity had dropped significantly. Enter year 2 of mild use the OEM battery now tests 0.05Ah capacity. Due to my involvement with eBikes, EV’s and some industrial battery bank installations I decided it might be time to retrofit this otherwise great portable amplifier using battery chemistry from this century. 3-4S Lipoly doesn't really deliver the voltages required without some circuit modifications but BMS protected 4S LiFePo4 does. Enter this little guy. This identically sized reasonably priced drop in LiFePo4 package saves about 2lbs and the Hi/Lo BMS voltage cutoffs appear to agree perfectly with the stock Fishman circuitry. Rated 12V/6Ah and very close to that using 0.1C discharge current. 3A or 0.5C still delivers about 5Ah which is at least double new SLA working capacity. I hope search engines will find this review. I don’t review much but this is one of those that a certain group of people may find very helpful when looking to replace the OEM battery used in Fishman LoudBox Mini Charge. Run time is now much much much longer than with new SLA and losing 2 lbs is always a great thing with music amps. Hopefully these cells are somewhat like the A123 LiFePo4 developer cells I've been using 15 years and still deliver 80% capacity. And that's 100's possibly 1000's of roughly 50% charge cycles. One last thing this is NOT a cranking battery. Do not buy it for electric start motorcycles or other high current applications. I believe the application description including motorcycles is meant for kickstart motos only.
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Reviewed in the United States on April 6, 2021 by J Payne J Payne
I used this to replace a lead acid battery used in a largish speaker. The speaker came with a lead acid I replaced once already. The radio runs them down to almost nothing making the lead acids cycle life God awful and loosing significant capacity each time. This was a direct replacement and has worked great. Capacity is larger than the lead acid. It charges with its same internal trickle charger (also responsible for killing the lead acids since it never really stops trying to charge) So far it's lasted over a year where the lead acids would be un-useable within a month or two. I never measured the capacity. But it's apparent that any low current application would be fitting. And The BMS seems to protect it well enough in my application. I would not use this for UPS replacements. Inverters tend to draw alot of current. 4 stars because I see alot of people received ones with quality control issues and woranttee issues and I don't want to pump up a rating for a company that doesn't properly stand by their promises. It's also unfortunate to hear it doesn't have over current discharge protection.
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Reviewed in the United States on November 9, 2021 by Jimmy