7.4v 5000mah Battery Pack

7.4V 5000mAh Battery Pack gives HSS Energy supplier project customers a simple early choice: more width or more length. The 18650 build is about 38 x 38 x 67mm, while the 21700 build is about 45 x 22 x 72mm and slightly lighter. That difference is often more useful than a long feature list. Once the available space, lead direction and connector are known, we can settle the construction and prepare the sample specification.

Supplied product photo: representative heat-shrink-wrapped pack. Cell layout, dimensions, connector and wiring follow the approved project configuration.

Quick Choice: 18650 or 21700?

Key Specifications

1. Same Capacity, Different Footprint

Four 2500mAh cells make the 18650 version, while two 5000mAh cells make the 21700 version. A 21700 5000mAh battery pack can save width and a little weight; the four-cell alternative uses a shorter overall length. Neither is an upgrade over the other. The equipment drawing decides which shape is easier to install and secure.

2. What 5Ah Means in the Equipment

A 2S 5000mAh Li-ion battery pack stores about 37Wh at nominal values. Actual runtime is better estimated from the device's usual power draw and working cycle, not from capacity alone. Short peaks, startup current and time spent at full load can change the result, so those figures are useful when reviewing a new project.

Marketing illustration, not a test record. Connector style and visible construction are representative; the approved configuration controls production.

3. Application Fit Before Compatibility Claims

The supplied application artwork points toward medical devices, beauty equipment, massagers and portable instruments. A portable instrument lithium battery is still selected by numbers, not by the application label. Check normal and peak current, available space, connector polarity, cable routing and charging method first. These application groups are sensible evaluation directions, but they are not blanket compatibility claims.

Conceptual application illustration only. These are evaluation directions, not confirmed compatibility or verified customer cases.

4. Charger and Cut-off Match

This is a 2S pack, so the charger must suit the stated 8.4V upper limit. The product sheet lists a 2A maximum charge current and recommends 0.5C charging. A 7.4V NCM battery pack also needs the equipment and charger to agree on low-voltage behavior. Confirming those limits early is a small step that prevents many sample-stage problems.

5. Keep Repeat Orders on the Same Build

An 18650 2S2P lithium battery and the 21700 version should never share an incomplete order description. We record the cell format, layout, connector part number, polarity, wire gauge, lead length, cable exit, label and packaging in the approved specification. That document becomes the practical reference for sampling and repeat production.

Marketing illustration of available customization categories. Each change remains subject to technical review and the approved order specification.

6. Quality Release for Two Possible Constructions

The inspection record needs to identify the ordered construction, not just the product name. Cell model, layout, voltage, capacity, internal resistance, BMS rating, wiring, connector, dimensions, weight and appearance are checked against the approved plan. Xiamen HSS Energy Technology Co., Ltd was established in 2023. Its core partners bring more than ten years of battery-industry experience, and multiple production bases in China provide approximately 12,000 square meters of production space.

Process illustration, not a batch record. Actual inspection items and packaging follow the confirmed quality plan and order.

FAQ

Which cell configurations are available?

The NCM pack may use 18650 2500mAh cells in 2S2P or 21700 5000mAh cells in 2S1P.

Do the two options have the same dimensions?

No. The 18650 2S2P version is approximately 38 x 38 x 67mm and 0.20kg. The 21700 2S1P version is approximately 45 x 22 x 72mm and 0.18kg.

How should runtime be estimated?

Use the equipment's usual power draw, peak demand and duty cycle. The calculated nominal energy is approximately 37Wh, but actual runtime depends on the load and operating conditions.

What charger is required?

Use a charger suitable for a 2S NCM pack and the limits in the approved specification. The listed maximum charge current is 2A, with 0.5C charging recommended.

Can the connector be selected for the equipment?

Yes. JST and DC5521 are listed as options, and another connector may be evaluated after the mating side, polarity, wire gauge and lead length are confirmed.

Request a Project Quotation

For the 7.4V 5000mAh Battery Pack, send HSS Energy the equipment load, expected runtime, battery-space drawing, connector, charger, destination and quantity. We will review the electrical and mechanical interface and prepare a project-specific sampling specification and quotation.