---
product_id: 67709780
title: "18V 9.0Ah Replacement Battery Compatible with BL1830 BL1840 BL1850 BL1860 BL1890 Lithium-Ion Battery Tools with LED Indicator"
brand: "waitley"
price: "$U5170"
currency: UYU
in_stock: true
reviews_count: 8
category: "Waitley"
url: https://www.desertcart.uy/products/67709780-18v-9-0ah-replacement-battery-compatible-with-bl1830-bl1840-bl1850
store_origin: UY
region: Uruguay
---

# 9.0Ah long-lasting capacity LED indicator for real-time charge 18V high-voltage power 18V 9.0Ah Replacement Battery Compatible with BL1830 BL1840 BL1850 BL1860 BL1890 Lithium-Ion Battery Tools with LED Indicator

**Brand:** waitley
**Price:** $U5170
**Availability:** ✅ In Stock

## Summary

> 🔋 Power up your projects with confidence and never run out of juice!

## Quick Answers

- **What is this?** 18V 9.0Ah Replacement Battery Compatible with BL1830 BL1840 BL1850 BL1860 BL1890 Lithium-Ion Battery Tools with LED Indicator by waitley
- **How much does it cost?** $U5170 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/products/67709780-18v-9-0ah-replacement-battery-compatible-with-bl1830-bl1840-bl1850)

## Best For

- waitley enthusiasts

## Why This Product

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

## Key Features

- • **Optimized Longevity:** Advanced electronic charge/discharge control extends battery life, saving you money and hassle.
- • **Seamless Compatibility:** Works flawlessly with original Makita 18V tools and chargers—no compromises, just power.
- • **Marathon-Grade Capacity:** 9.0Ah (9000mAh) battery life means fewer interruptions and more productivity on every project.
- • **Power That Keeps You Going:** 18V voltage delivers consistent, professional-grade energy for all your cordless tools.
- • **Smart LED Charge Indicator:** Integrated LED lights show exact battery percentage, so you never get caught off-guard.

## Overview

The Waitley 18V 9.0Ah Lithium-Ion Replacement Battery offers robust, long-lasting power compatible with Makita BL18 series tools. Featuring a smart LED indicator for precise charge monitoring and advanced electronics to optimize battery life, it ensures professional-grade performance and reliability for demanding cordless tool users.

## Description

waitley 18V 9.0Ah Replacement Battery Compatible with BL1830 BL1840 BL1850 BL1860 BL1890 Lithium-Ion Battery Tools with LED Indicator - desertcart.com

Review: Good battery - Had this battery for a couple years now been a good battery no problems last quite a while. Pretty good run time however, with most knock off batteries, the battery level indicator is not accurate. I wish Makita made a high power battery. Overall, I do recommend this battery.
Review: I'm happy with them. - HEAVY, BUT DOES A GOOD JOB, I've had my two batteries for over a year now and although they are heavy, they are not unmanageable. They work on all my Makita products, especially the chain saw. I use the Makita charger and so far I am very pleased with them. I'm about to order two more and I'm hoping they are of the same quality.

## Features

- Voltage:18V Capacity:9.0Ah(9000mAh), Battery type:Li-ion
- New design：with LED indicate lights is percent capacity display, avoid excessive use and improve working life
- Compatible with original 18V Cordless Power tools and original chargers
- Electronics control charge & discharge analytics to optimize performance and extend life
- Any questions(problem), 24-hour friendly customer service

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07B4WFT86 |
| Batteries | 1 Lithium Ion batteries required. (included) |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Capacity | 9 Amp Hours |
| Battery Cell Type | Lithium Ion |
| Best Sellers Rank | #111,914 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1,024 in Cordless Tool Battery Packs |
| Color | Black |
| Customer Reviews | 4.2 4.2 out of 5 stars (361) |
| Date First Available | March 28, 2017 |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 1.43 pounds |
| Manufacturer | Waitley |
| Material | Other |
| Part Number | WTL1830 |
| Product Dimensions | 4.57 x 3.62 x 3.19 inches |
| Voltage | 18 Volts |
| Wattage | 162 watts |

## Product Details

- **Battery Capacity:** 9 Amp Hours
- **Battery Cell Composition:** Lithium Ion
- **Brand:** waitley
- **Number of Batteries:** 1 Lithium Ion batteries required. (included)
- **Recommended Uses For Product:** Power Tool

## Images

![18V 9.0Ah Replacement Battery Compatible with BL1830 BL1840 BL1850 BL1860 BL1890 Lithium-Ion Battery Tools with LED Indicator - Image 1](https://m.media-amazon.com/images/I/61kuOi9JhQL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good battery
*by G***A on January 12, 2025*

Had this battery for a couple years now been a good battery no problems last quite a while. Pretty good run time however, with most knock off batteries, the battery level indicator is not accurate. I wish Makita made a high power battery. Overall, I do recommend this battery.

### ⭐⭐⭐⭐⭐ I'm happy with them.
*by J***I on November 4, 2025*

HEAVY, BUT DOES A GOOD JOB, I've had my two batteries for over a year now and although they are heavy, they are not unmanageable. They work on all my Makita products, especially the chain saw. I use the Makita charger and so far I am very pleased with them. I'm about to order two more and I'm hoping they are of the same quality.

### ⭐⭐⭐⭐ Definitly not 9AH, but stil good value.
*by H***R on April 7, 2024*

These are definitely not on par with the name brand or deliver the rated Amp Hour life. The batteries are huge, and almost 2x the weight of my 5AH name brand batteries so be ware of that as wll. I'm using them in a 36V pair on a leaf blower. The name brand 5AH batteries last 15-20 min on average. So these should give me 27-36 min of life. I'm getting more like 18-25min range. So these are equivalent to about a 6AH name brand battery. LiON batteries sometimes take a few charge cycles to give a full life, but after about a dozen charges I swear I'm getting a few min less, not more. they also tend to over heat and shut down at about 2/3 discharge where my name brand ones do not. If I give it a couple min break half way though they don't do this. If they do shut down, wait about 5 min and they will come back to life again with the meter changing from 0% to, in my case, about 40%. That said these are also 1/3 the price of the name brand so it's still a good deal. I wouldn't get these for your main batteries but for a back up or additional pair they are a good value.

## Frequently Bought Together

- waitley 18V 9.0Ah Replacement Battery Compatible with BL1830 BL1840 BL1850 BL1860 BL1890 Lithium-Ion Battery Tools with LED Indicator
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*Product available on Desertcart Uruguay*
*Store origin: UY*
*Last updated: 2026-02-10*