MakerHawk 4 Pack 3.7V 1000mAh LiPo Battery Rechargeable 1S 3C 102050 Lithium Polymer Battery with Dual Battery Protection Board, Micro JST 2.0 Connector Plug for Electronic Device

Great fit for my application. Modified emcomm meshtastic nodes to have a battery backup. Exact size was 20.75mm wide x 10.8 mm thick x 51mm length.

Works well.

These batteries work. But for how long? I ordered 6 4-packs and 4 of the batteries I got died within the first charge. There's only a 30 day warranty on these. So I'm screwed out of the cost for 1 purchase. I bought these to build custom fog machines that I've already shipped out to my customers. Now, I have to honor them by eating the cost of new batteries when it's not even my fault.

Se ve bien

The pinout was reversed for what I needed (powering an Adafruit HUZZAH32). After fixing that I gave it a full charge to 4.2V using a MCP73831T-2ACI/OT set to 500 mA charge rate and then tested the capacity with a HiLetgo Battery Capacity Meter with a 7.5 ohm load resistor. This discharges at approximately 500 mA, similar to the charger's rate. The capacity to 3.3V measured 930mAh. To 3.2V measured 1022mAh.Since the description claims over-discharge protection I then set the tester to discharge down to 3.0V. If the battery indeed has discharge protection it should prevent this since this voltage level will degrade the battery over time. From 3.2V to 3.0V the battery quickly dropped voltage and provided an additional 42mAh, but an over-discharge protection cut-off was not observed.Recharging to full 4.2V (actually measured at 4.17V) took 10 min + 2 hours 50 minutes.Overall a solid option. I'ts nice that this battery is actually rated at 1S 3C. Many lower cost batteries don't providing #S and #C ratings.

Love Makerhawk products. I use their batteries in all of my maker projects and radio projects. Simple to use and reliable, so far, build quality. They are consistent and are good value for the money.

Perfect little battery for small, embedded projects. Be aware that it has a JST PH connector. It has been working well for me. Recommended.

I tested the MakerHawk 3.7V 1000mAh LiPo Battery with my Meshtastic Rak WisBlock 4631 to compare its performance against my current 1000mAh battery. While this battery ultimately didn’t work for my project due to its 10mm thickness (my case requires a cell 7mm thick or less), I was impressed with its performance during testing.Upon connecting the battery, it showed 86% charge. After charging to 96%, my meter indicated a 134mAh draw from USB power. I then conducted a runtime test, and with decent radio traffic (i.e., not idling the entire time), the battery lasted an impressive 3 days, 9 hours before reaching 34% charge. This is outstanding performance, especially for low-power applications.Overall, this is a fantastic battery for projects that can accommodate its size. The dual battery protection board and Micro JST 2.0 connector make it a solid and reliable choice for electronic devices. Highly recommended for projects that require efficiency and longevity!