Batteries by voltage
7.4V Lithium Battery Packs
7.4V lithium battery packs commonly use two 3.7V cells or cell groups in series. LiPo, cylindrical-cell and RC pack requirements differ in current demand, dimensions and connector arrangement.
Product Categories · 7.4V
7.4V Battery Categories
3 categories7.4V 2S LiPo Batteries
Two-series pouch-cell packs with specified balance and power connections.
View Category7.4V 2S Li-ion Packs
Two-series packs built around a defined cell model and protection system.
View Category7.4V RC Battery Packs
Pack requirements for RC equipment designed for a 2S battery.
View CategoryAbout 7.4V Battery Packs
A 7.4V pack based on 3.7V cells is a two-series, or 2S, assembly. Parallel groups may increase capacity while retaining the same nominal voltage. A 2S label alone does not specify capacity, current capability or protection.
For cells with a 4.2V upper charge limit, two in series reach 8.4V. This is a calculation example; use a charger and protection arrangement approved for the exact pack.
How to Compare 7.4V Battery Packs
| Selection criterion | What to compare |
|---|---|
| 2S configuration | Confirm chemistry, cell count and charging limits. |
| Current & C-rating | Translate any C-rating using capacity, then verify allowable current and duration from the datasheet. |
| Connections | Check main connector polarity and whether a balance connection is required. |
| Protection | Confirm how overcharge, overdischarge and overcurrent protection are provided. |
7.4V Battery Project Requirements
Electrical
Provide the operating voltage window, required energy and continuous/peak current for your 7.4V project.
Mechanical
Provide the compartment drawing, mounting points, connector details and cable routing.
Validation
Agree charging, load, temperature and equipment-integration checks for the selected design before ordering.
7.4V Battery Pack FAQs
What does 2S mean on a 7.4V battery?
It means two cells or parallel cell groups connected in series. With 3.7V nominal cells, the nominal pack voltage is 7.4V.
Can a 7.4V battery replace an 11.1V pack?
Not as a direct substitution. The equipment, motor controller and charger must support the different operating voltage.
Is a 7.4V 5000mAh battery a 37Wh pack?
At the stated nominal values, 7.4V × 5Ah equals 37Wh. Usable energy and runtime depend on load, cutoff and operating conditions. This calculation does not describe an available model.
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