---
product_id: 422804657
title: "KP-402020 3.7v 400mAh Rechargeable Battery for Smart Watch (W26 and W26+) 400 mAh (DB-4)"
brand: "kp"
price: "$10"
currency: NZD
in_stock: true
url: https://www.desertcart.nz/products/422804657-kp-402020-3-7v-400mah-rechargeable-battery-for-smart-watch
store_origin: NZ
region: New Zealand
---

# 400mAh Capacity Compact Size 3.7V Power KP-402020 3.7v 400mAh Rechargeable Battery for Smart Watch (W26 and W26+) 400 mAh (DB-4)

**Brand:** kp
**Price:** $10
**Availability:** ✅ In Stock

## Summary

> 🔋 Power Up Your Smartwatch Experience!

## Quick Answers

- **What is this?** KP-402020 3.7v 400mAh Rechargeable Battery for Smart Watch (W26 and W26+) 400 mAh (DB-4) by kp
- **How much does it cost?** $10 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/422804657-kp-402020-3-7v-400mah-rechargeable-battery-for-smart-watch)

## Best For

- kp enthusiasts

## Why This Product

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

## Key Features

- • **🌍 Made in India:** Support local craftsmanship with this high-quality battery.
- • **🔋 Unleash the Power:** Experience a robust 3.7V voltage for optimal performance.
- • **⚡ Stay Charged Longer:** Enjoy a generous 400mAh capacity for extended usage.
- • **📏 Perfectly Portable:** Compact dimensions (4 x 2 x 2 cm) make it easy to carry.
- • **🔗 Seamless Connectivity:** Bluetooth connectivity ensures smooth integration with your smartwatch.

## Overview

The KP-402020 3.7v 400mAh Rechargeable Battery is designed specifically for W26 and W26+ smartwatches, providing reliable power with a compact design. Weighing only 20g, this lithium polymer battery ensures seamless connectivity and extended usage, making it an essential accessory for tech-savvy professionals.

## Description

KP-402020 3.7v 400mAh Rechargeable Battery for Smart Watch (W26 and W26+) 400 mAh (DB-4)

## Features

- KP-402020 3.7v 400mAh rechargeable battery for smart watch (W26 and W26+)
- Volt -3.7v
- Capacity -400mAh

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | KP |
| Manufacturer | KP, kporiginalbattery@gmail.com |
| Series | 402020 |
| Item Height | 20 Millimeters |
| Item Width | 20 Millimeters |
| Product Dimensions | 4 x 2 x 2 cm; 20 g |
| Batteries | 1 Lithium Polymer batteries required. (included) |
| Item model number | 400 mAh |
| Connectivity Type | Bluetooth |
| Voltage | 3.7 Volts (DC) |
| Power Source | battery powered |
| Hardware Platform | Multiple |
| Are Batteries Included | Yes |
| Lithium Battery Energy Content | 400 Milliampere Hour (mAh) |
| Included Components | Battery Only |
| Manufacturer | KP |
| Country of Origin | India |
| Item Weight | 20 g |

## Product Details

- **Number of Batteries:** 1 Lithium Polymer batteries required. (included)
- **Brand:** KP
- **Battery Cell Composition:** Lithium Polymer
- **Battery Capacity:** 400 Milliamp Hours
- **Recommended Uses For Product:** Watch
- **Net Quantity:** 1.00 count
- **Voltage:** 3.7 Volts (DC)
- **Reusability:** Rechargeable
- **Model Name:** 402020
- **Battery Weight:** 20 Grams

## Images

![KP-402020 3.7v 400mAh Rechargeable Battery for Smart Watch (W26 and W26+) 400 mAh (DB-4) - Image 1](https://m.media-amazon.com/images/I/61SAK3Y-cnL.jpg)
![KP-402020 3.7v 400mAh Rechargeable Battery for Smart Watch (W26 and W26+) 400 mAh (DB-4) - Image 2](https://m.media-amazon.com/images/I/61corTWbFAL.jpg)

## Frequently Bought Together

- KP-402020 3.7v 400mAh Rechargeable Battery for Smart Watch (W26 and W26+) 400 mAh (DB-4)
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- Wayona Type C to Type C 6FT/2M 65W Long Fast Charging Cable Compatible with iPhone 16, iPhone 15 Pro/Max Series Macbook Air/Pro Samsung Galaxy S25, Ultra/S24/ S23 Flip Fold OnePlus (2M, Grey)

---

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**Shop now:** [https://www.desertcart.nz/products/422804657-kp-402020-3-7v-400mah-rechargeable-battery-for-smart-watch](https://www.desertcart.nz/products/422804657-kp-402020-3-7v-400mah-rechargeable-battery-for-smart-watch)

---

*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-01-22*