---
product_id: 613341640
title: "RocketBus 4 BK-40AAABU 1.2V 400mAh Ni-MH Rechargeable Battery Packs for Panasonic Cordless Phone System BK40AAABU"
brand: "rocketbus"
price: "$40.04"
currency: USD
in_stock: true
category: "Rocket Bus"
url: https://www.desertcart.us/products/613341640-rocketbus-4-bk-40aaabu-1-2v-400mah-ni-mh-rechargeable
store_origin: US
region: United States of America
---

# 400mAh Long-Lasting Charge 1.2V Power Boost Ni-MH Rechargeable Tech RocketBus 4 BK-40AAABU 1.2V 400mAh Ni-MH Rechargeable Battery Packs for Panasonic Cordless Phone System BK40AAABU

**Brand:** rocketbus
**Price:** $40.04
**Availability:** ✅ In Stock

## Summary

> 🔋 Power your calls, power your day — never miss a moment!

## Quick Answers

- **What is this?** RocketBus 4 BK-40AAABU 1.2V 400mAh Ni-MH Rechargeable Battery Packs for Panasonic Cordless Phone System BK40AAABU by rocketbus
- **How much does it cost?** $40.04 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/613341640-rocketbus-4-bk-40aaabu-1-2v-400mah-ni-mh-rechargeable)

## Best For

- rocketbus enthusiasts

## Why This Product

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

## Key Features

- • **Compact & Ready to Go:** Slim 1 x 1 x 2 inch batteries fit perfectly without bulk.
- • **Extended Battery Life:** 400mAh capacity ensures longer talk time and fewer replacements.
- • **Peace of Mind Warranty:** Backed by a 1-year warranty to keep you connected worry-free.
- • **Sustainable Rechargeable Design:** Eco-friendly Ni-MH cells that keep your devices powered and reduce waste.
- • **Reliable Power for Your Panasonic:** Seamlessly compatible with top Panasonic cordless phone models for uninterrupted calls.

## Overview

The RocketBus 4 BK-40AAABU rechargeable battery pack delivers reliable 1.2V, 400mAh Ni-MH power designed specifically for Panasonic cordless phone systems. Compatible with multiple KX-TGD and KX-TGE series models, these compact batteries offer sustainable rechargeability and come with a 1-year warranty, ensuring long-lasting performance and peace of mind.

## Description

Buy RocketBus 4 BK-40AAABU 1.2V 400mAh Ni-MH Rechargeable Battery Packs for Panasonic Cordless Phone System BK40AAABU: Batteries - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

## Features

- 1.2V 400mAh
- Ni-MH Rechargeable
- Compatible with KX-TGD220N, KX-TGD22N, KX-TGD223N, KX-TGD224N, KX-TGD225N, KX-TGE273S, KX-TGE274S, KX-TGE275S
- 1 Year Warranty

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CW4JMHHB |
| Amperage | 400 Milliamps |
| Antenna Location | Phone |
| Battery Capacity | 400 Milliamp Hours |
| Battery Cell Composition | NiMH |
| Battery Cell Type | NiMH |
| Best Sellers Rank | #23 in Cordless Telephone Batteries |
| Brand | RocketBus |
| Compatible Phone Models | KX-TGD220N, KX-TGD22N, KX-TGD223N, KX-TGD224N, KX-TGD225N, KX-TGE273S, KX-TGE274S, KX-TGE275S |
| Country of Origin | China |
| Item Dimensions | 1 x 1 x 2 inches |
| Item Height | 2 inches |
| Manufacturer | RocketBus |
| Model Name | BK-40AAABU |
| Model Number | BK-40AAABU |
| Number of Batteries | 4 AAA batteries required. (included) |
| Recommended Uses For Product | Phone |
| Reusability | Rechargeable |
| UPC | 680063060908 |
| Unit Count | 4.0 Count |
| Voltage | 1.2 Volts |
| Warranty Description | 1 Year Warranty |

## Product Details

- **Number of Batteries:** 4 AAA batteries required. (included)
- **Brand:** RocketBus
- **Battery Cell Composition:** NiMH
- **Battery Capacity:** 400 Milliamp Hours
- **Recommended Uses For Product:** Phone

## Images

![RocketBus 4 BK-40AAABU 1.2V 400mAh Ni-MH Rechargeable Battery Packs for Panasonic Cordless Phone System BK40AAABU - Image 1](https://m.media-amazon.com/images/I/81Gq4rxGCUL.jpg)

## Frequently Bought Together

- RocketBus 4 BK-40AAABU 1.2V 400mAh Ni-MH Rechargeable Battery Packs for Panasonic Cordless Phone System BK40AAABU
- RocketBus 6-Pack BK-40AAABU Replacement 1.2V 400mAh Battery for Panasonic Cordless Phone System BK40AAABU
- Cerepros 4-Pack BK-40AAABU 1.2V 400mAh Replacement Battery Pack for Panasonic Cordless Phone Handset BK40AAABU

---

## 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.us/products/613341640-rocketbus-4-bk-40aaabu-1-2v-400mah-ni-mh-rechargeable](https://www.desertcart.us/products/613341640-rocketbus-4-bk-40aaabu-1-2v-400mah-ni-mh-rechargeable)

---

*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-15*