---
product_id: 642727191
title: "20237 SL-B9 Protected Li-Ion USB-C Rechargeable Battery, 2-Pack"
brand: "streamlight"
price: "RM187"
currency: MYR
in_stock: true
reviews_count: 9
category: "Streamlight"
url: https://www.desertcart.com.my/products/642727191-20237-sl-b9-protected-li-ion-usb-c-rechargeable-battery
store_origin: MY
region: Malaysia
---

# 6-hour USB-C fast charge 2-pack Li-Ion power Duty-grade durability 20237 SL-B9 Protected Li-Ion USB-C Rechargeable Battery, 2-Pack

**Brand:** streamlight
**Price:** RM187
**Availability:** ✅ In Stock

## Summary

> 🔦 Power your mission with Streamlight’s unstoppable rechargeable duo!

## Quick Answers

- **What is this?** 20237 SL-B9 Protected Li-Ion USB-C Rechargeable Battery, 2-Pack by streamlight
- **How much does it cost?** RM187 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.my](https://www.desertcart.com.my/products/642727191-20237-sl-b9-protected-li-ion-usb-c-rechargeable-battery)

## Best For

- streamlight enthusiasts

## Why This Product

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

## Key Features

- • **Fast USB-C Recharge:** Get a full charge in just 6 hours with modern USB-C convenience—charger sold separately.
- • **Reliable Dual Power:** Two SL-B9 rechargeable batteries keep your gear mission-ready without interruption.
- • **Consistent Peak Brightness:** Engineered to maintain steady, bright output throughout every charge cycle.
- • **Eco-Friendly & Cost-Saving:** Say goodbye to disposable batteries and reduce waste while saving money over time.
- • **Built for the Toughest Demands:** Streamlight’s professional-grade construction ensures durability trusted by first responders.

## Overview

The Streamlight 20237 SL-B9 is a 2-pack of rechargeable lithium-ion batteries designed specifically for select Streamlight weapon-mounted lights. Featuring fast 6-hour USB-C charging, consistent brightness output, and rugged durability, these batteries deliver dependable, eco-friendly power trusted by law enforcement and tactical professionals worldwide.

## Description

Meet the Streamlight SL-B9 Rechargeable Battery Pack, the smarter, more reliable way to power your everyday Streamlight flashlight. Designed by the brand trusted by law enforcement, tradesmen, industrial crews, and everyday users worldwide, the SL-B9 gives you dependable runtime without the hassle, waste, or cost of constantly replacing disposable batteries. Instead of wondering whether your light will fail when you need it most, the SL-B9 keeps your flashlight mission-ready. Recharge it, drop it in, and go whether you’re stepping into a dark basement, responding to a call, navigating a jobsite, or simply walking the dog after sunset. The rechargeable design helps reduce battery waste while delivering Streamlight-level performance you can trust day after day. Streamlight engineered the SL-B9 battery pack for consistent output, long-lasting durability, and reliable performance in demanding environments. It’s purpose-built for compatible Streamlight models, ensuring secure fit, optimal power delivery, and the confidence that your light will work when it matters most. If you rely on your flashlight at work or at home the SL-B9 makes it easier, greener, and more economical to stay prepared. Stay powered. Stay ready. Choose genuine Streamlight.

Review: Worth trying out, charges quickly and used a USB-C cable. - Great rechargeable battery for Streamlight Vantage II headlamp. Operators say longevity is same as non rechargeable but it always depends on usage, how long and in what capacity. Charges quickly with USB-C charger. Operators say the difference between this and non rechargeable is that this one just stops working when it needs charged. The non rechargeable will dim before its ready to be replaced. Quality seems good like most Streamlight products. Unsure on value, it depends on how many months/years before it won't charge enough to be able to use.
Review: Solid Rechargable Batteries - They power my TLR-7X just fine. They recharge and last for a good while with good power output. They feel nice and having a type C charging port is nice.

## Features

- Compatibility and Purpose: Fits select Streamlight weapon mounted lights; verifty compatibility before purchase; the SL-B9 rechargeable lithium-ion battery pack delivers consistent power output and dependable performance for duty-grade illumination tools
- Reliable Performance & Runtime: Engineered for optimized runtimes and sustained brightness output, the SL-B9 ensures your light maintains peak intensity throughout the charge cycle ideal for law enforcement, security, military, and EDC users
- USB-C Rechargeable Convenience: Skip disposable batteries and reduce downtime, the SL-B9 battery pack recharges with 6 hours using USB-C (charger sold separately), built-in charge indicator that displays red when charging and green when charged
- What’s Included from Streamlight: Includes two (2) Streamlight SL-B9 rechargeable lithium-ion batteries
- Built Streamlight Tough: Built to Streamlight’s proven professional-grade standards for durability, reliability, and field performance trusted worldwide by first responders, tactical professionals, and demanding users

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D7VKJX8Y |
| Best Sellers Rank | #19,920 in Health & Household ( See Top 100 in Health & Household ) #350 in Household Batteries |
| Brand Name | Streamlight |
| Color | Black |
| Customer Reviews | 4.8 4.8 out of 5 stars (571) |
| Date First Available | June 24, 2024 |
| Included Components | (2) SL-B9 battery packs |
| Item Dimensions LxWxH | 1.36 x 0.67 x 0.67 inches |
| Item Package Dimensions L x W x H | 5.91 x 3.82 x 0.94 inches |
| Item Weight | 20 Grams |
| Manufacturer | Streamlight |
| Material | Plastic |
| Model Name | SL-B9 |
| Number of Items | 2 |
| Package Weight | 0.05 Kilograms |
| Part Number | 20237 |
| Size | One Size |
| Style | Classic |
| Suggested Users | mens |
| Warranty Description | Two Year Limited Warranty |

## Product Details

- **Battery Capacity:** 850 Milliamp Hours
- **Battery Cell Composition:** Lithium Ion
- **Brand:** Streamlight
- **Number of Batteries:** 2 Product Specific batteries required. (included)
- **Recommended Uses For Product:** Streamlight Weapon Lights

## Images

![20237 SL-B9 Protected Li-Ion USB-C Rechargeable Battery, 2-Pack - Image 1](https://m.media-amazon.com/images/I/617xldVBl0L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Worth trying out, charges quickly and used a USB-C cable.
*by T***I on July 23, 2025*

Great rechargeable battery for Streamlight Vantage II headlamp. Operators say longevity is same as non rechargeable but it always depends on usage, how long and in what capacity. Charges quickly with USB-C charger. Operators say the difference between this and non rechargeable is that this one just stops working when it needs charged. The non rechargeable will dim before its ready to be replaced. Quality seems good like most Streamlight products. Unsure on value, it depends on how many months/years before it won't charge enough to be able to use.

### ⭐⭐⭐⭐⭐ Solid Rechargable Batteries
*by W***E on May 1, 2025*

They power my TLR-7X just fine. They recharge and last for a good while with good power output. They feel nice and having a type C charging port is nice.

### ⭐⭐⭐⭐⭐ Replacement
*by A***S on December 17, 2025*

Exactly replacement. Work as expected.

## Frequently Bought Together

- Streamlight SL-B9 Rechargeable Battery 850mAh, 2-Pack, 20237
- Streamlight 69458 TLR-7 HL-X USB 1000-Lumen Rechargeable Rail Mounted Weapon Light, Includes Interchangeable High and Low Switches, Black
- Streamlight 69424 TLR-7 X 500-Lumen Compact Tactical Weapon Light, Includes High, Low Paddle Switches and Key Kit, Black

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**Shop now:** [https://www.desertcart.com.my/products/642727191-20237-sl-b9-protected-li-ion-usb-c-rechargeable-battery](https://www.desertcart.com.my/products/642727191-20237-sl-b9-protected-li-ion-usb-c-rechargeable-battery)

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*Product available on Desertcart Malaysia*
*Store origin: MY*
*Last updated: 2026-01-31*