---
product_id: 730728280
title: "MakerFocus MakerFocus 4pcs 3.7V Lithium Rechargable Battery, 802540 3.7V 1000mAh Battery with Protection Board Insulated Rubber Tape Matched with ESP32 Development Board WiFi Kit for Arduino Nodemcu"
brand: "makerfocus"
price: "€ 1.86"
currency: EUR
in_stock: false
url: https://www.desertcart.es/products/730728280-makerfocus-makerfocus-4pcs-3-7v-lithium-rechargable-battery-802540-3
store_origin: ES
region: Spain
---

# 3A max discharge current 1000mAh high-capacity power Multi-layer protection board MakerFocus MakerFocus 4pcs 3.7V Lithium Rechargable Battery, 802540 3.7V 1000mAh Battery with Protection Board Insulated Rubber Tape Matched with ESP32 Development Board WiFi Kit for Arduino Nodemcu

**Brand:** makerfocus
**Price:** € 1.86
**Availability:** ❌ Out of Stock

## Summary

> 🔌 Power your passion, protect your projects!

## Quick Answers

- **What is this?** MakerFocus MakerFocus 4pcs 3.7V Lithium Rechargable Battery, 802540 3.7V 1000mAh Battery with Protection Board Insulated Rubber Tape Matched with ESP32 Development Board WiFi Kit for Arduino Nodemcu by makerfocus
- **How much does it cost?** € 1.86 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/730728280-makerfocus-makerfocus-4pcs-3-7v-lithium-rechargable-battery-802540-3)

## 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

- • **Perfect ESP32 Match:** Optimized for Arduino and NodeMCU WiFi kits, powering your IoT innovations seamlessly
- • **Reliable Power Boost:** 1000mAh capacity fuels your ESP32 projects with lasting energy
- • **Compact & Lightweight:** Slim 4.5 x 2.5 x 1 cm design fits perfectly in your DIY setups without bulk
- • **Safe & Smart Charging:** Built-in overcharge and over-discharge protection keeps your battery healthy and your devices safe
- • **Instant Short-Circuit Defense:** Protection board cuts power within milliseconds to prevent damage

## Overview

The MakerFocus 3.7V 1000mAh lithium rechargeable battery pack includes a built-in protection board that safeguards against overcharge, over-discharge, and short circuits. Designed specifically for ESP32 and Arduino NodeMCU WiFi development boards, it delivers up to 3A discharge current in a compact, lightweight form factor, ensuring reliable and safe power for your IoT and DIY electronics projects.

## Description

4pcs 3.7V Lithium Rechargeable Battery, 852540 3.7V 1000mAh Battery with Protection Board and Insulated Rubber Tape Matched with ESP32 Development Board WiFi Kits for Ar duino NodeMCU Note:  1. The maximum operating current of this battery is only about 1A, can not be used for unmanned aerial vehicles, model aircraft or power tools and other products that require high current. 2. This battery interface is JST 1.25 pitch male, it can be matched with some ESP32 Development Board that it come with Female JST 1.25 mm connectors. Specification: Standard Voltage: 3.7V Rated Capacity: 1000mAh Weight: About 17g Size: 44*26*9（mm） Working Current: 1.5A Overcurrent protection: 2~3A Overcharge limit pressure: 4.25±0.05V Over-voltage limit pressure: 2.45±0.30V Charge current time: Standard Charging: 0.2C (8 hours); Fast charging: 0.5C (2.5 hours) The maximum charging current: 0.5C Continuous Discharge Current: 0.5C The maximum discharge current: 1C End-off voltage: 2.75V/pcs Allowable charging temperature: 0℃ ~ +45 ℃ Allowable discharge temperature: -10 ~ +60 ℃ Allowable storage temperature: -10 ~ +40 ℃( within 3 months); -10 ~ +30 ℃ ( within 6 months) Standard Charging Method: Charging this battery to 4.25V at 0.2C constant current, then charge the battery at a constant voltage of 4.2V till it's charging current≤ 0.05C. Package Including:  4 * 1000mAh 852540 3.7V Lithium Rechargeable Battery

## Features

- Note: The battery overcurrent protection is not a panacea, do not continue to charge and discharge the current and voltage with a large current beyond the range, otherwise the protection board will be damaged and invalid
- 1000mAh: The recommended charging current is 0.2A, the maximum is not more than 1A. The discharge current is recommended 0.55A, and the maximum is not more than 3A
- 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
- 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
- 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

## Images

![MakerFocus MakerFocus 4pcs 3.7V Lithium Rechargable Battery, 802540 3.7V 1000mAh Battery with Protection Board Insulated Rubber Tape Matched with ESP32 Development Board WiFi Kit for Arduino Nodemcu - Image 1](https://m.media-amazon.com/images/I/71Tylj-YGBL.jpg)
![MakerFocus MakerFocus 4pcs 3.7V Lithium Rechargable Battery, 802540 3.7V 1000mAh Battery with Protection Board Insulated Rubber Tape Matched with ESP32 Development Board WiFi Kit for Arduino Nodemcu - Image 2](https://m.media-amazon.com/images/I/718Kr5PCDPL.jpg)
![MakerFocus MakerFocus 4pcs 3.7V Lithium Rechargable Battery, 802540 3.7V 1000mAh Battery with Protection Board Insulated Rubber Tape Matched with ESP32 Development Board WiFi Kit for Arduino Nodemcu - Image 3](https://m.media-amazon.com/images/I/717ZO8cucqL.jpg)
![MakerFocus MakerFocus 4pcs 3.7V Lithium Rechargable Battery, 802540 3.7V 1000mAh Battery with Protection Board Insulated Rubber Tape Matched with ESP32 Development Board WiFi Kit for Arduino Nodemcu - Image 4](https://m.media-amazon.com/images/I/71PS6RjHhmL.jpg)
![MakerFocus MakerFocus 4pcs 3.7V Lithium Rechargable Battery, 802540 3.7V 1000mAh Battery with Protection Board Insulated Rubber Tape Matched with ESP32 Development Board WiFi Kit for Arduino Nodemcu - Image 5](https://m.media-amazon.com/images/I/7179SLJJcYL.jpg)

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*Product available on Desertcart Spain*
*Store origin: ES*
*Last updated: 2026-02-07*