---
product_id: 206376238
title: "3.7V 1100mAh Lithium Polymer Rechargeable Battery for ESP32 4pcs"
brand: "makerfocus"
price: "$43.10"
currency: USD
in_stock: true
reviews_count: 8
category: "Maker Focus"
url: https://www.desertcart.us/products/206376238-3-7v-1100mah-lithium-polymer-rechargeable-battery-for-esp32-4pcs
store_origin: US
region: United States of America
---

# 1.6-2.2A instant overcurrent protection 1100mAh high-capacity power JST 1.25mm plug for seamless ESP32 integration 3.7V 1100mAh Lithium Polymer Rechargeable Battery for ESP32 4pcs

**Brand:** makerfocus
**Price:** $43.10
**Availability:** ✅ In Stock

## Summary

> 🔋 Power your projects with confidence — never miss a beat!

## Quick Answers

- **What is this?** 3.7V 1100mAh Lithium Polymer Rechargeable Battery for ESP32 4pcs by makerfocus
- **How much does it cost?** $43.10 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/206376238-3-7v-1100mah-lithium-polymer-rechargeable-battery-for-esp32-4pcs)

## Best For

- makerfocus enthusiasts

## Why This Product

- Trusted makerfocus brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact Powerhouse:** Lightweight 20g design fits perfectly with ESP32 and Meshtastic devices.
- • **Smart Overcharge Defense:** Auto shutoff at 4.2V keeps your battery safe and stress-free.
- • **Plug & Play Compatibility:** JST 1.25mm connector tailored for ESP32 LoRa and other dev boards.
- • **Instant Short Circuit Shield:** Milliseconds response to prevent catastrophic failures.
- • **Reliable Over-discharge Guard:** Protects battery life by cutting off at 3.0V to avoid damage.

## Overview

This 3.7V 1100mAh Lithium Polymer rechargeable battery pack includes built-in protection circuits for overcharge, over-discharge, and short circuit, ensuring safe and reliable power delivery. Designed with a compact 20g form factor and JST 1.25mm connectors, it’s optimized for ESP32 development boards and Meshtastic devices, delivering up to 1.6-2.2A instantaneous overcurrent protection for demanding IoT and wireless projects.

## Description

desertcart.com: MakerFocus 3.7V 1100mAh Lithium Polymer Rechargeable Battery for ESP32 4pcs | 1S LiPo Battery, JST 1.25 Plug, Built-in Protection Board for Meshtastic Devices, ESP32 Development Board, Electronic Devices : Toys & Games

Review: Great for Xiao ESP32 - Using with the Xiao ESP32C3 which charges the battery when connected via usb and run on battery when disconnected. Literally leaves nothing else to do for power management.
Review: Good - So I charged one up with a cheap USB-to-jst lipo charger and then powered a 600ma 3-4v COB led bar with it. That led really hauls in the current and using a 4-led battery charge indicator designed for lipo/18650 batteries I watched it immediately drop from 4-bars to 2-bars and then hold there as the light shone. Those COB light bars generate tremendous heat though and with only the aluminum backing plate and no heatsink I had to shut it off within only 10-15 seconds. The battery recovered to 4-bars almost instantly. The upshot is the battery is more than capable of driving a 600ma load which I would say is a heavy load. The pigtail wires coming out of the battery are very fine, they’re pretty stiff and fully tinned iirc, and 1.25mm jst connectors are freaking tiny but I saw nothing to say it wouldn’t work fine under heavy load. When I got them the test battery was at 3.95v and it took some time to get it up to 4.2 and for the lipo charger to declare it done. I wasn’t paying attention when I ordered them and didn’t notice these are 1.25mm jst connectors, I was expecting 2mm. I’ve ordered 1.25mm pigtails but for now I put a 2mm pigtail on one for testing. I will probably replace all of the 1.25’s with 2’s but that’ll be on a case by case basis, the 1.25’s might be an advantage sometimes.

## Features

- Overcharge Protection: When charging the battery, when the voltage reaches the highest battery voltage (4.2V), the protection board will automatically power off and shut down, indicating that it will not continue to charge when fully charged, form an overcharge protection
- Over-discharge Protection: When the battery is about to run out and the voltage is as low as 3.0V, the protection board will also be turned off and can no longer be discharged, forming an over-discharge protection effect
- Short Circuit Protection: When an accidental short circuit occurs, the protection board will automatically shut down within a few milliseconds and will not be powered on again. Note that the cell is short-circuited (not through the protection board). The protection board will also fail due to continuous high current, or the components are heated and damaged
- Charging Method: Recommended charging current is 0.22A, with a maximum of 0.55A. Recommended discharge current is 0.22A, the maximum is no more than 0.55A, the protection board is equipped with mos tube, the overcurrent protection (instantaneous) is 1.6-2.2A, and the charging voltage setting is recommended to be 4.2V
- Widely Application: With JST 1.25 plug, these lithium polymer batteries can be used for development board whose plug is SH1.25-2, such as ESP32 LoRa V3, ESP32 LoRa V4, Wireless Tracker, Mesh Node T114, Mesh Node T096 and electronic devices
- Note: Overcurrent protection is not a panacea, please do not continue to charge and discharge with large current, or the current and voltage beyond the range, otherwise the protection board will be damaged and invalid

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0867KDMY7 |
| Amperage | 1.5 A |
| Antenna Location | ESP32 Development Board Whose Plug is SH1.25-2, Electronic Devices, Meshtastic Devices |
| Battery Capacity | 1100 milliampere_hour |
| Battery Cell Composition | Lithium Polymer |
| Battery Cell Type | Lithium Polymer |
| Battery Weight | 20 g |
| Best Sellers Rank | #64,050 in Toys & Games ( See Top 100 in Toys & Games ) #218 in Hobby Remote & App Controlled Vehicle Batteries |
| Brand | MakerFocus |
| Customer Reviews | 4.5 out of 5 stars 195 Reviews |
| Item Dimensions | 1.77 x 0.98 x 0.39 inches |
| Item Weight | 17.96 g |
| Manufacturer | MakerFocus |
| Model Name | 3048-1-1100-1S |
| Model Number | UO381121YVC |
| Number of Batteries | 4 Lithium Ion batteries required. |
| Recommended Uses For Product | ESP32 Development Board Whose Plug is SH1.25-2, Electronic Devices, Meshtastic Devices |
| Reusability | Rechargeable |
| UPC | 738582462144 |
| Unit Count | 4 Count |
| Voltage | 3.7 volts |
| Warranty Description | No Warranty |

## Product Details

- **Battery Capacity:** 1100 Milliamp Hours
- **Battery Cell Composition:** Lithium Polymer
- **Brand:** MakerFocus
- **Number of Batteries:** 1 P76 batteries required. (included)
- **Recommended Uses For Product:** ESP32 Development Board Whose Plug is SH1.25-2, Electronic Devices, Mesh Node T114

## Images

![3.7V 1100mAh Lithium Polymer Rechargeable Battery for ESP32 4pcs - Image 1](https://m.media-amazon.com/images/I/71b+w7dcz-L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great for Xiao ESP32
*by C***R on February 23, 2026*

Using with the Xiao ESP32C3 which charges the battery when connected via usb and run on battery when disconnected. Literally leaves nothing else to do for power management.

### ⭐⭐⭐⭐⭐ Good
*by P***R on October 25, 2025*

So I charged one up with a cheap USB-to-jst lipo charger and then powered a 600ma 3-4v COB led bar with it. That led really hauls in the current and using a 4-led battery charge indicator designed for lipo/18650 batteries I watched it immediately drop from 4-bars to 2-bars and then hold there as the light shone. Those COB light bars generate tremendous heat though and with only the aluminum backing plate and no heatsink I had to shut it off within only 10-15 seconds. The battery recovered to 4-bars almost instantly. The upshot is the battery is more than capable of driving a 600ma load which I would say is a heavy load. The pigtail wires coming out of the battery are very fine, they’re pretty stiff and fully tinned iirc, and 1.25mm jst connectors are freaking tiny but I saw nothing to say it wouldn’t work fine under heavy load. When I got them the test battery was at 3.95v and it took some time to get it up to 4.2 and for the lipo charger to declare it done. I wasn’t paying attention when I ordered them and didn’t notice these are 1.25mm jst connectors, I was expecting 2mm. I’ve ordered 1.25mm pigtails but for now I put a 2mm pigtail on one for testing. I will probably replace all of the 1.25’s with 2’s but that’ll be on a case by case basis, the 1.25’s might be an advantage sometimes.

### ⭐⭐⭐⭐ Works... but don't buy if you are pairing up with some Heltec v3 cases. Size in the review
*by G***I on April 5, 2025*

I ordered these pair up with the following Heltec V3 cases: https://www.amazon.com/ESP32-Development-1100mAh-Battery-Protect/dp/B0DPKSKDTT the connector fits but the battery is way too big to fit in the case. In short battery works electrically the connector (JST 1.25) fits into Heltec V3 Mechanically, does NOT fit in the case I showed above The listing doesn't mention size, here it is Length: 51 mm; 2in Width: 30 mm; 1.17in

## Frequently Bought Together

- MakerFocus 4pcs 3.7V 1100mAh Lithium Rechargeable Battery 1S 1C LiPo Battery with Protection Board, Insulated Rubber Tape and Micro JST 1.25 Plug for Arduino ESP32 Development Board
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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-30*