---
product_id: 320696963
title: "Rechargeable 3.7V Li Lipo Lithium Polymer Ion Battery Pack with 2 Pin 2.0mm/1.25mm JST Connector (503035 500mAh 2.0Jst)"
brand: "caoduren"
price: "฿982"
currency: THB
in_stock: true
reviews_count: 8
category: "Cao Du Ren"
url: https://www.desertcart.co.th/products/320696963-rechargeable-3-7v-li-lipo-lithium-polymer-ion-battery-pack
store_origin: TH
region: Thailand
---

# Rechargeable 3.7V Li Lipo Lithium Polymer Ion Battery Pack with 2 Pin 2.0mm/1.25mm JST Connector (503035 500mAh 2.0Jst)

**Brand:** caoduren
**Price:** ฿982
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Rechargeable 3.7V Li Lipo Lithium Polymer Ion Battery Pack with 2 Pin 2.0mm/1.25mm JST Connector (503035 500mAh 2.0Jst) by caoduren
- **How much does it cost?** ฿982 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/320696963-rechargeable-3-7v-li-lipo-lithium-polymer-ion-battery-pack)

## Best For

- caoduren enthusiasts

## Why This Product

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

## Description

MSDS Verified Part Number: 503035, Rechargeable 3.7V 500mAh Li Lipo Lithium Polymer Ion Battery Pack with 2 Pin 2.0mm JST Connector

Review: Great product - Great seller
Review: Check your polarity! - I was wondering why it wouldn't power on my RAK4631 despite reading 3.7v on my meter and then I realized the connector is reversed from what the RAK expects - checked by measuring the battery pins while plugged into wall power without the battery connected. Just need something pointy to lift the plastic lock on each pin of the battery connector so that the metal ends can slide out and you can swap them - be careful not to let them touch when the ends aren't in the connector.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B091FKGW8H |
| Battery Cell Type | Lithium Ion |
| Battery Weight | 10 Grams |
| Best Sellers Rank | #305,316 in Health & Household ( See Top 100 in Health & Household ) #661 in 3.7V Batteries |
| Brand | CaoDuRen |
| Customer Reviews | 4.0 4.0 out of 5 stars (42) |
| Item Dimensions | 1.38 x 1.18 x 0.2 inches |
| Item Weight | 0.01 Kilograms |
| Manufacturer | Gerneric |
| Model Name | 503035 |
| Model Number | 503035 |
| Number of Batteries | 1 Lithium Ion batteries required. (included) |
| Reusability | Rechargeable |
| Unit Count | 1.0 Count |
| Voltage | 3.7 Volts |

## Product Details

- **Battery Cell Composition:** Lithium Ion
- **Brand:** CaoDuRen
- **Number of Batteries:** 1 Lithium Ion batteries required. (included)
- **Unit Count:** 1.0 Count
- **Voltage:** 3.7 Volts

## Images

![Rechargeable 3.7V Li Lipo Lithium Polymer Ion Battery Pack with 2 Pin 2.0mm/1.25mm JST Connector (503035 500mAh 2.0Jst) - Image 1](https://m.media-amazon.com/images/I/51pPKHlLaCS.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great product
*by N***G on August 6, 2021*

Great seller

### ⭐⭐⭐⭐ Check your polarity!
*by S***H on January 23, 2026*

I was wondering why it wouldn't power on my RAK4631 despite reading 3.7v on my meter and then I realized the connector is reversed from what the RAK expects - checked by measuring the battery pins while plugged into wall power without the battery connected. Just need something pointy to lift the plastic lock on each pin of the battery connector so that the metal ends can slide out and you can swap them - be careful not to let them touch when the ends aren't in the connector.

### ⭐⭐⭐ CHECK POLARITY BEFORE PLUGGING IN!
*by A***R on November 15, 2021*

Check your polarity before plugging in! Like an idiot, I just assumed the polarity was the same all around, and matched the Adafruit battery picture. The JST connector only plugs in one way (ridge facing the sky). I was wrong. Didn't notice polarity was flipped with this battery I ordered off Amazon. Plugged my ESP32 feather with USB, then plugged in Amazon battery. Feather started smoking and burnt out. It's done. So, in conclusion kids, never assume! Check your polarity before plugging stuff in not directly from the microcontroller manufacturer!

## Frequently Bought Together

- CaoDuRen Rechargeable 3.7V Li Lipo Lithium Polymer Ion Battery Pack with 2 Pin 2.0mm/1.25mm JST Connector (503035 500mAh 2.0Jst)
- SparkFun (PID 14411 LiPo Charger/Booster - 5V/1A
- Arduino Nano 33 BLE Sense Rev2 with Headers [ABX00070] – AI Microcontroller with Sensors, Bluetooth, for Wearables, Gesture & Voice Recognition

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.co.th/products/320696963-rechargeable-3-7v-li-lipo-lithium-polymer-ion-battery-pack](https://www.desertcart.co.th/products/320696963-rechargeable-3-7v-li-lipo-lithium-polymer-ion-battery-pack)

---

*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-04-28*