Introduction

The 3.7V 120mAh Lithium-ion Polymer Battery is a lightweight, slim, and rechargeable battery suitable for smart wearables, sensors, and portable devices; it supports OEM customization and bulk supply.

Parameter

Items	Specifications
Batteries	3.7v 120mah lipo battery
Charge voltage	4.2V
Nominal voltage	3.7V
Nominal capacity	300mAh 0.2C Discharge
Charge current	Standard Charging: 0.5C Rapid charge: 1.0C
Standard Charging Method	0.5C CC (constant current) charge to 4.2V, then CV (constant voltage 4.2V) charge till charge current decline to ≤0.05C
Charging time	Standard Charging:2.75hours(Ref.) Rapid charge: 2hours(Ref.)
Max. charge current	1.0C
Max. discharge current	1.0C
Discharge cut-off voltage	2.75V(0.2C)
Operating temperature	Charging: 0 °C ~45 °C Discharging: 0 °C ~45 °Carging: 0 °C ~45 °C
Discharging: Storage temperature0 °C ~45 °C	-10°C~ +45 °C
Dimension	Length: 50±2mm (not including tabs) Width: 20±0.5mm Thickness:10±0.2mm
Drop Test	The cell is to be dropped from a height of meters twice onto concrete ground. No fire, no leakage

Features of Lithium Ion Polymer Battery 3.7 V 120mah

Customizable Structure
Dimensions, thickness, tab placement, and connector types can be customized to fit directly into specific device spaces, thereby reducing structural mold modification costs.

300–500 Cycle Lifespan
Under standard operating conditions, the 3.7V 120mAh Lithium-ion Polymer Battery supports approximately 300–500 charge-discharge cycles, making it suitable for devices intended for long-term use.

Small-Batch Trial Production Available
Orders start from as few as 100–500 units, making this option ideal for the sample development and solution validation stages.

Stable Batch Consistency
The 3.7V 120mAh Lithium-ion Polymer Battery undergoes rigorous capacity grading; units within the same batch exhibit minimal deviation in capacity and internal resistance, making them suitable for large-scale device manufacturing applications.

Customization

Item	Customization Details
Dimensions	Length, width, and thickness can be adjusted according to internal device space requirements
Capacity Range	Adjustable from low capacity to extended capacity ranges
Connection Method	Supports JST, Molex, or bare wire output configurations
Protection Circuit	Can integrate overcharge, over-discharge, and short-circuit protection modules
Labeling & Packaging	Supports OEM branding and neutral packaging
Operating Temperature Adaptation	Structure can be optimized for low-temperature or standard-temperature versions

FAQ

Q: What are the payment methods for the 3.7V 120mAh Lithium-Ion Polymer Battery?

A: We accept T/T wire transfers, PayPal, and-for select orders-credit payment terms. Typically, our payment structure involves a 30% upfront deposit and a 70% balance settlement prior to shipment.

Q: What trade terms do you support?

A: We support various trade terms, including EXW, FOB, and CIF. The specific terms can be flexibly selected based on the chosen shipping method and destination port.

Q: What is the Minimum Order Quantity (MOQ)?

A: The standard MOQ is typically between 100 and 500 units. We also support sample production runs to facilitate initial product validation requirements.

Q: What is the lead time for delivery?

A: The production lead time for samples is approximately 5–7 days, while the lead time for mass production orders is generally kept within a range of 2–4 weeks.

Q: How do you ensure quality?

A: Prior to leaving the factory, the 3.7V 120mAh Lithium-Ion Polymer Battery undergoes multiple inspections covering capacity, internal resistance, and physical appearance. Additionally, a consistency screening process is performed before shipment to ensure product uniformity.

Q: What is the packaging method?

A: The batteries are individually packaged in anti-static materials, utilizing foam dividers for internal separation and reinforced outer cartons to ensure secure transport.

Q: What is the working principle?

A: The 3.7V 120mAh Lithium-Ion Polymer Battery operates through the process of intercalation and de-intercalation of lithium ions between the positive and negative electrodes, thereby facilitating the charge and discharge cycles.

Q: Which devices are compatible with this battery?

A: It is suitable for use in power supply systems for smart wearable devices, sensor modules, Bluetooth-enabled terminals, and various miniature electronic products.

Q: How should it be installed and used?

A: The battery connects to the device's circuitry via its positive and negative lead wires and should be paired with a standard lithium battery management module to regulate power supply.

Q: How should it be stored?

A: It is recommended to store the battery with a charge level between 20% and 50%, in a cool and dry environment.

Q: Do you support international shipping?

A: Yes; the product complies with UN38.3 standards and can be transported internationally via both air and sea freight.