---
product_id: 539095031
title: "- USB Rechargeable 9V Batteries (2-Pack) - 4500mWh Lithium Ion, 1000+ Charge Cycles, Includes 2-in-1 USB-A to USB-C Charging Cable, LED Charge Indicator, 3.4 Hour Charge Time"
brand: "paleblue"
price: "R$437"
currency: BRL
in_stock: true
reviews_count: 10
url: https://www.desertcart.com.br/products/539095031-usb-rechargeable-9v-batteries-2-pack-4500mwh-lithium-ion-1000
store_origin: BR
region: Brazil
---

# 12x faster charge 1000+ recharge cycles USB-C fast charging - USB Rechargeable 9V Batteries (2-Pack) - 4500mWh Lithium Ion, 1000+ Charge Cycles, Includes 2-in-1 USB-A to USB-C Charging Cable, LED Charge Indicator, 3.4 Hour Charge Time

**Brand:** paleblue
**Price:** R$437
**Availability:** ✅ In Stock

## Summary

> 🔋 Power smarter, charge faster, live greener.

## Quick Answers

- **What is this?** - USB Rechargeable 9V Batteries (2-Pack) - 4500mWh Lithium Ion, 1000+ Charge Cycles, Includes 2-in-1 USB-A to USB-C Charging Cable, LED Charge Indicator, 3.4 Hour Charge Time by paleblue
- **How much does it cost?** R$437 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/539095031-usb-rechargeable-9v-batteries-2-pack-4500mwh-lithium-ion-1000)

## Best For

- paleblue enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Over 1000 recharge cycles mean you’re investing in longevity, not landfill waste.
- • **Charge in a Flash:** Experience industry-leading 3.4-hour recharge times—power up 12x faster than traditional batteries.
- • **Eco-Smart & Cost-Savvy:** Cut costs and carbon footprint by replacing disposable batteries with a rechargeable powerhouse.
- • **Smart USB-C Convenience:** Includes a 2-in-1 USB-A to USB-C cable with LED indicators for effortless, simultaneous charging.
- • **Leak-Free Lithium Ion Tech:** Say goodbye to messy leaks with modern lithium-ion chemistry trusted in your phone and laptop.

## Overview

Paleblue USB Rechargeable 9V Batteries (2-Pack) deliver 4500mWh lithium-ion power with ultra-fast 3.4-hour charge times and over 1000 recharge cycles. Featuring a versatile 2-in-1 USB-A to USB-C charging cable and LED charge indicators, these leak-proof batteries combine convenience, durability, and eco-conscious savings for professional-grade performance in compatible 9V devices.

## Description

Buy paleblue USB Rechargeable 9V Batteries (2-Pack) - 4500mWh Lithium Ion, 1000+ Charge Cycles, Includes 2-in-1 USB-A to USB-C Charging Cable, LED Charge Indicator, 3.4 Hour Charge Time: 9V - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Great batteries, saves money, reduces waste - NOT suitable for smoke/CO2 alarms - These are great batteries. They work well in a Fluke multimeter. I got tired of buying and throwing away expensive 9V batteries - these batteries solved that problem. I would not recommend this type of battery for a smoke alarm or CO2 alarm, but for other applications they are great. The voltage does not reduce slowly like a non-rechargeable battery, they just go from 9V to 0V so the low battery function in the smoke alarm will not work with this battery. This poses a safety concern because you might not know the battery has discharged. It is an annoyance in normal devices because you will not get a low battery warning before it stops working, but in a safety critical application like a smoke alarm it could be deadly.
Review: Pale Blue: A Compelling Alternative to Disposable Batteries - Pale Blue's Rechargeable 9V Smart Batteries offer a convenient and eco-friendly alternative to disposable 9V batteries. Here's a close look at their features and potential drawbacks: Pros: Cost-Effective: While the upfront cost is higher than disposable batteries, these Pale Blue rechargeables can replace over 1000 single-use batteries, leading to significant savings in the long run. Fast Charging: The batteries can be fully charged in under 3 hours, making them ideal for replacing depleted batteries quickly. High Capacity: With a 500 mAh capacity, these batteries should provide ample power for most 9V devices. Long Lifespan: Pale Blue advertises over 1000 recharge cycles per battery, significantly reducing waste compared to disposable batteries. User-Friendly: The included USB-C charging cable makes charging convenient, and the LED indicator clearly shows the charging status. Cons: Higher Initial Cost: As with most rechargeable batteries, the initial purchase price is higher than disposable batteries. Limited Availability: While these batteries seem to be gaining traction, they might not be as widely available as traditional disposable batteries. Compatibility: Double-check that your devices are compatible with rechargeable 9V batteries before purchasing, as some electronics may not function properly with them. Overall: Pale Blue's Rechargeable 9V Smart Batteries are a great option for environmentally conscious consumers who want to save money in the long run. The fast charging, high capacity, and long lifespan make them a compelling alternative to disposable batteries. However, the initial cost and potential compatibility issues are factors to consider before buying. If you frequently use 9V batteries and your devices are compatible, these rechargeable batteries from Pale Blue are a sustainable and cost-effective choice.

## Features

- INDUSTRY LEADING CHARGE TIME: With our advanced lithium rechargeable technology, Paleblue batteries charge up to 12x faster than conventional rechargeable batteries.
- NEVER WORRY ABOUT LEAKING BATTERIES AGAIN: Our modern lithium ion chemistry works just like the battery in your phone or laptop so you never have to deal with leaking batteries.
- OVER 1000 CHARGING CYCLES: Stop buying single-use batteries and get a modern solution. Designed for performance, convenience and reliability. Our batteries will help you reduce waste, save money and save time.
- CONVENIENT USB-C CHARGE PORT: Use the included cable to charge four batteries at once. The built-in LED charging indicator will let you know when they are fully charged.
- ON-BOARD SMART TECHNOLOGY PROVIDES SAFE CHARGING: 1 hour charging time and consistent 1.5V are game changing. No more batteries ruining expensive electronic devices!
- WARRANTY: At Paleblue, we stand behind the quality of our products with a limited lifetime warranty, covering manufacturing defects and failures during normal use when products are registered through Paleblue’s online registration process. See our website for details.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0C8GTM7FT |
| Batteries | 2 9V batteries required. (included) |
| Best Sellers Rank | #19,399 in Cell Phones & Accessories ( See Top 100 in Cell Phones & Accessories ) #60 in 9V Batteries #714 in Cell Phone Portable Power Banks |
| Customer Reviews | 4.4 4.4 out of 5 stars (212) |
| Date First Available | February 26, 2020 |
| Item Weight | 1.06 ounces |
| Item model number | PB-9V |
| Manufacturer | paleblue |
| Product Dimensions | 0.79 x 4.33 x 6.69 inches |

## Product Details

- **Battery Capacity:** 500 Milliamp Hours
- **Battery Cell Composition:** Lithium Ion
- **Brand:** paleblue
- **Number of Batteries:** 2 9V batteries required. (included)
- **Recommended Uses For Product:** Toys

## Images

![- USB Rechargeable 9V Batteries (2-Pack) - 4500mWh Lithium Ion, 1000+ Charge Cycles, Includes 2-in-1 USB-A to USB-C Charging Cable, LED Charge Indicator, 3.4 Hour Charge Time - Image 1](https://m.media-amazon.com/images/I/71j8KCWlqlL.jpg)

## Questions & Answers

**Q: Do these work in fire and CO detectors?**
A: If the detectors use 9V batteries, they'll work. They're standard 9V batteries, just instead of NiMH or acid, they are lithium ion usb rechargeable.

**Q: Is the 9v battery good for voltage-sensitive devices?  ie does it operate at 9v or closer to 8v?**
A: This is a lithium ion battery and the chemical component of these batteries will outlast the alkaline batteries that we normally use. the charge will remain linear for a certain period in relation to what equipment we use. for high discharge rate equipments like motors depending on how we use,or use in continuous manner it will last for around 3 hours depending on my experience and you can recharge again.the voltage drop is sudden so do not overuse it.when you feel or sense something that is unusual recharge immediately.

**Q: Do the 9 volt batteries still charge from a 5 volt charger?**
A: No, they will not. The specific charger for a 9volt steps up the 5v usb to aprox 10v to charge the batery. Much like a 12v car battery; charges at 13.8v giving a surface charge of 12.5v

**Q: Does the 9V battery have a boost circuit inside to provide a constant 9.0V output, or is the output just two cells in series for 8.40V maximum voltag?**
A: I don't know what hardware is inside the batt as I did not open them.
but I test the battery in a Multimeter seen to be giving out the correct amp & voltage, also the multi uses 9v seen to be working good and I use it a lot. Also, the stud finder is a hug, will kill a commercial 9v within hours, the 9v has worked wonderfully. now if they have the same hardware inside as the AAA yes I see then having issue delivering the same continuous current to your device especially if the device pulls a lot. I used the AAA on group of 3 on a headlamp and for the first 5-10 minutes I have a good light bright then dims down to low light, I left it on to fully drain the batteries for over 24hr still on so at least that is a plus.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great batteries, saves money, reduces waste - NOT suitable for smoke/CO2 alarms
*by L***E on October 16, 2025*

These are great batteries. They work well in a Fluke multimeter. I got tired of buying and throwing away expensive 9V batteries - these batteries solved that problem. I would not recommend this type of battery for a smoke alarm or CO2 alarm, but for other applications they are great. The voltage does not reduce slowly like a non-rechargeable battery, they just go from 9V to 0V so the low battery function in the smoke alarm will not work with this battery. This poses a safety concern because you might not know the battery has discharged. It is an annoyance in normal devices because you will not get a low battery warning before it stops working, but in a safety critical application like a smoke alarm it could be deadly.

### ⭐⭐⭐⭐⭐ Pale Blue: A Compelling Alternative to Disposable Batteries
*by S***. on June 24, 2024*

Pale Blue's Rechargeable 9V Smart Batteries offer a convenient and eco-friendly alternative to disposable 9V batteries. Here's a close look at their features and potential drawbacks: Pros: Cost-Effective: While the upfront cost is higher than disposable batteries, these Pale Blue rechargeables can replace over 1000 single-use batteries, leading to significant savings in the long run. Fast Charging: The batteries can be fully charged in under 3 hours, making them ideal for replacing depleted batteries quickly. High Capacity: With a 500 mAh capacity, these batteries should provide ample power for most 9V devices. Long Lifespan: Pale Blue advertises over 1000 recharge cycles per battery, significantly reducing waste compared to disposable batteries. User-Friendly: The included USB-C charging cable makes charging convenient, and the LED indicator clearly shows the charging status. Cons: Higher Initial Cost: As with most rechargeable batteries, the initial purchase price is higher than disposable batteries. Limited Availability: While these batteries seem to be gaining traction, they might not be as widely available as traditional disposable batteries. Compatibility: Double-check that your devices are compatible with rechargeable 9V batteries before purchasing, as some electronics may not function properly with them. Overall: Pale Blue's Rechargeable 9V Smart Batteries are a great option for environmentally conscious consumers who want to save money in the long run. The fast charging, high capacity, and long lifespan make them a compelling alternative to disposable batteries. However, the initial cost and potential compatibility issues are factors to consider before buying. If you frequently use 9V batteries and your devices are compatible, these rechargeable batteries from Pale Blue are a sustainable and cost-effective choice.

### ⭐⭐⭐⭐⭐ Accurate voltage, consistent with other 9V
*by S***Y on November 26, 2025*

I haven't battle tested the capacity, but I can say this and the AAA from paleblue deliver the same voltage as promised on the label and are comparable to non-rechargeable batteries. Other rechargeable brands will either fail to deliver on the promise or at least be honest in their labeling that it's less voltage than standard. Voltage does not degrade over time, so I wouldn't use it for something life and death like a smoke alarm, but for anything else, these seem to work great.

## Frequently Bought Together

- Paleblue USB Rechargeable 9V Batteries (2-Pack) - 4500mWh Lithium Ion, 1000+ Charge Cycles, Includes 2-in-1 USB-A to USB-C Charging Cable, LED Charge Indicator, 3.4 Hour Charge Time
- paleblue USB Rechargeable AA Batteries (4-Pack) - 2550mWh Lithium Ion, 1.5V, 1000+ Charge Cycles, Includes 4-in-1 USB-A to USB-C Charging Cable, LED Charge Indicator, Quick 1.9 Hour Charging
- paleblue USB Rechargeable AAA Lithium Batteries, 1 Hour Charge Time, Recharge Over 1000 Times, 600 mAh, 4-in-1 USB-A to USB-C Charging Cable, 4 Pack

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*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-01-27*