3.7V 6600mAh Li-ion Battery Pack — JST-PH 2-Pin

Often third party batteries don't have the full advertised capacity, but I was pleasantly surprised to find this one does. It also has built in protection, so should last a long time and operate safely its entire life.It was double wrapped in shrink tube, and had additional insulators on the ends of the batteries. The welds looked good. Overall a good assembly.

I'm a retired electronics technician. I've built an electronics bench here at home to design, build and test all things electronic. For small circuits I often need a high capacity battery but one that is only 3.7V. Most of these rc type lithium's that are over 1200mAh are usually bumped up to 2S, or 7.4V. Thus, when I want a high milliamp output but only 1S, or 3.7V, I usually have to put several 500 or 1200mAh batteries in parallel. That can get bulky. This battery allow me to avoid that. You get 6,600mAh of current for about $20. However, that is a bit pricey per mAh. The good news is that it incorporates BMS, or battery management system. This makes it hard to overcharge if you were so inclined. That is a good thing and worth the extra bucks. Thus, I give this five stars and recommend.

Picked this up as I needed a 3.7V battery source for my Meshtastic node (a RAK Wireless WisBlock device). I was planning on using some basic 18650 batteries with a battery holder and charge controller, but this was the perfect alternative to that as it already has a robust BMS and the JST-2 connector to hook directly to my WisBlock.I performed several tests on the battery pack, and it lives up to it's 6600mAh rating! I also ran it through its paces in my node, and no issues thus far with several charge/discharge cycles.Highly recommended plug-and-play option for my fellow Meshtastic nerds!

This power block contains three 18650 2200 mAh batteries.The workmanship is very good, I took it apart and was impressed by the quality of the terminal connectors and the plastic bondage that holds the unit together. Everything is done very professional; the battery looks robust and it should last.The IC-DW01 chips inside the unit protect the battery against over-charge and over-discharge, provide temperature control and short circuit protection. Description suggests CE, Rohs and UL certification which adds confidence in the product.Manufacturer's website provided in the description has product's manual, warranty info, certifications and more. I don't see this very often and I think this battery pack from Xain-USA deserves a five-star rating.

La conecté a la bobina y funciona muy bien y el envío fue muy rápido

Delivery was fast….

Thank you!

Outstanding communications! Battery PAC works like OEM

Perfect replacement battery for my simple human mirror

I am very happy with this battery.It works well with my development board and lasts forever without needing a charge. It has the standard 2 pin JST connector that all these batteries have and it plugged right into my board without any issues. For me this was a perfect drop in replacement for the thin 3.7V lithium packs you see everywhere.I'd highly recommend this item to friends and colleagues. It's working great for me.

This small pack does well with the 2-pin connector. I've put it to good use in a few kid toys and RC cars with good results. Takes and holds a charge well.

Always skeptical of li-ion, Ni-MH batteries that are inexpensive. Usually they are never as good as compared to the originals. However, these were an exact fit, came fully charged and after 2 complete cycles of discharge and charge, they appear great. I'm giving them a thumbs up.

I have a CTronics camera that originally came with a 4-cell battery pack, but I've been unable to find a replacement. This battery pack is the same voltage and even though its milliamp-hours rating is lower, so far it's doing a great job. Charges properly, and keeps the camera running all night.

I purchase this battery for building my Wistblock Meshtastic node. The battery has proper polarity for the RAK wisblock (As of 6/22/2024). The battery performs great.

I bought this battery after searching for a way to repair my Simplehuman mirror. They're really pricey, and I didn't want to dish out another $200 plus dollars to buy a replacement mirror. I found a reddit thread where they talked about the ease of opening up the bottom of my mirror and replacing the lithium ion battery. It took me less than five minutes (and I'm a chick that doesn't normally repair things well). This battery is made well, very easy to install, and arrived quickly. The price is also extremely fair. I'm a happy customer, and I'm thrilled my mirror lights properly again.

I used this battery pack as a replacement for the power source in my portable oscilloscope.The connector was slightly different, but the pack itself was exactly the same, 3 18650 Li-ion batteries.I soldered my old connector onto this battery pack and I'm back in business again.Thanks!

I pretty much went by the battery size and connector to get a struggling motion detector back online. In my experience most of these batteries are pretty reliable, no matter the brand or manufacturer. So is this. Works great. Charges and performs without any issues. The quality is good, the connector and cable durable. Five stars from me. I hope this helps to make a decision.

Perfect fit, easy install.

I had this sitting in the package for over a month before I remembered I had it. I plugged it into my Adafruit Memento camera and it still had power. Also worked great for my Adafruit Circuit Playground powering a string of Neopixels. I haven't managed to drain it yet with my low-power applications, but the 6600 mAh capacity seems great for keeping them going.

This is a great power source for my Arduino prototyping boards. The battery pack gives my projects more flexibility in their applications. Right not I am using it in my water level indication alarm that I used in my monitoring applications. I am curious to see how well it performs when I finally build my drone!

This replacement Lithium -Ion battery replaces a defective battery in the control panel of my home alarm system. Mt Alarm is back on line working as it should. If the power goes out this battery keeps my alarm active for hours without AC power.

This Li-ion battery pack has been ideal so far for my Arduino project to monitor soil moisture in my wife's raised bed garden.With just one reading per day, the power consumption remains low, and this battery pack is doing great. It's holding up remarkably well, providing the necessary power to the Arduino using deep sleep mode except for the daily reading, and it hasn't required frequent recharging.The convenience of not having to worry about battery life constantly is a huge plus. It allows me to focus on refining and improving the functionality of the soil moisture monitoring system that I have integrated with Home Assistant without being concerned about power interruptions.Overall, I couldn't be happier with the performance of this battery pack. It's reliable, long-lasting, and perfectly suited for Arduino projects that require low power consumption.

Got this too run an esp32 board with a built in charging chip that uses the same jst connector size. It's plug and play which is great, and this is a lot of capacity that can run a lightweight routine for quite a while. Good for solar charged setups that may occasionally have to run on battery for a whole between decent sunny days.

Although the description doesn't say, this is basically a package of 2 18650 batteries @ 2 X 3300mAh. I didn't test the capacity, but if accurate these are medium strength cells. The 2pin JST-PH connector is fairly standard for Li-ion batteries.I am using this on a personal project based on an Adafruit Feather PCB, which it plugs straight into. Based on a quick test, this battery ought to power my project for over a week. I'm happy with that.

I was about to call it quits on my simple human mirror!! This battery is exactly what was inside. It came packaged safely and neatly. Super happy!

I have some Arduino applications where having a battery backup in case of power failures would be useful. I also have charge circuits for Lithium batteries. This pack has proven to be very useful. It provides all the benefits you would expect from a Lithium battery.