---
title: "B-tube 48 V, 20 Ah battery system"
description: "B-Tube 48 V 20 Ah Li ion battery system designed in-house to offer the best possible battery performance under heavy load. More info on our website!"
url: "https://embatterysystems.com/solutions/own-products/b-tube-48-v-12-ah-battery-system/"
date: "2023-05-09 22:39:02"
author: k.markiewka
ai_policy: custom
x-markdown-tokens: 939
---

## Structured Data

- **Type:** WebPage
- **Name:** 48 V 20 Ah Li-Ion Battery System - B-Tube - EMBS
- **Description:** B-Tube 48 V 20 Ah Li ion battery system designed in-house to offer the best possible battery performance under heavy load. More info on our website!
- **URL:** https://embatterysystems.com/solutions/own-products/b-tube-48-v-12-ah-battery-system/
- **Published:** 2023-05-09T22:39:02+00:00
- **Modified:** 2026-07-07T13:15:23+00:00

- **Website:** EMBS (https://embatterysystems.com/)
- **Publisher:** EMBS (https://embatterysystems.com/)


# B-tube 48 V, 20 Ah battery system

What can the B-tube 48 V 20 Ah Li-Ion battery be used for?

The B-tube 48 V 20 Ah Li-Ion battery system was designed in-house to offer the best possible battery performance under heavy load. We soon expect to also be able to offer a 5.8Ah version, further boosting capacity and energy level, up to approximately 1,100 Wh.

We’ve utilized aluminum housing for maximum durability, as well as better temperature management. All materials used in the construction of the B-tube are UL 94V-0 flame retardant for increased safety.

Advanced Design and Customization

The cell connectors in B-Tube 48 V 20 Ah have been designed using complex thermal simulations, ensuring performance even with high currents. Flex PCB ensures a long battery life thanks to the protection it provides against vibrations, plus also improves the assembly process. CAN communication, connector type, and other mechanical and electronic features are fully customizable.

Despite the high energy output, we have managed to achieve an aesthetically pleasing appearance. The design has also been optimized for high volume production and can be modular for different energy variants.

This battery can be fitted with an SoC indicator if requested. We can also ensure certification for higher IP ratings, as well as for other target markets and standards.

Check out our full product range, where you will also find the Univeral 48 V 30 Ah Li-Ion battery system.

- Voltage (nominal): 46,8 V
- Capacity (nom.): 20 Ah
- Energy (nom.): 630-1064 Wh
- Discharge current (nom.): 10 A
- Charging current (nom.): 4 A
- Discharge temperature range: -20 to 45°C
- Charging temperature range: 0 to 45°C
- Tightness degree: IPX4
- Dimensions (L x W x H): 490 x 74 x 99 mm
- Mass: ~ 4,3 kg
- Certification: IEC 60529:2014, CE, UN 38.3, IEC 62133, CE

What is the B-tube 48 V, 20 Ah battery system designed for?

The B-tube 48 V, 20 Ah battery system is designed for e-bike applications that require high energy output, reliable performance and efficient operation under heavy load. Its compact tube-style design makes it suitable for modern e-bike battery integration.

What are the key technical specifications of this battery system?

The battery system has a nominal voltage of 46.8 V, a nominal capacity of 20 Ah and nominal energy of 630-1064 Wh. It supports a nominal discharge current of 10 A and a nominal charging current of 4 A.

How does the B-tube battery support durability and safety?

The system uses an aluminium housing for improved durability and better temperature management. All materials used in the battery construction are UL 94V-0 flame retardant, helping increase safety during operation.

Can the B-tube battery system be customized?

Yes. The B-tube 48 V, 20 Ah battery system can be customized to meet specific application requirements. CAN communication, connector type and other mechanical or electronic features can be adapted, and the battery can also be fitted with an SoC indicator on request.

## Additional Structured Content
**Headline model (optional):** Model: 48 V
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