# Set of 2 Li-Ion batteries, MJ1, 18650, 3.7V, 3500mAh, 2.86C

> Set of 2 Li-Ion 18650 batteries, model INR18650-MJ1, nominal voltage 3.7V, capacity 3500mAh per cell. Discharge rate 2.86C (max. 10A), charge rate 0.5C (max. 1.75A). Flat top, suitable for spot welding. Internal resistance 28mOhm, weight 46.78g per battery. Supplied with a plastic case for storage and transport.

- Page: https://sigmanortec.ro/en/set-of-2-li-ion-batteries-mj1-18650-37v-3500mah-286c
- Price: 75.53 RON
- Availability: Out of stock
- Reference: 44003 · EAN: 5942357442384
- Category: Electronic components > Battery
- Specifications: Technology: Lithium Ion; Output Voltage: 3.7 V
- Package (shipping data): 0.106 kg
- Updated: 2026-04-07
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 06:23 (Europe/Bucharest)

## Description

Set of 2 Li-Ion 18650 MJ1 batteries for battery packs and equipment that require long autonomy and stable discharge. Offers 3.7V and 3500mAh per cell, supports up to 10A 2.86C discharge, flat head for spot welding, delivered with plastic box for safe storage and transport.
Set containing two 18650 Li-Ion batteries model MJ1, each with a nominal voltage of 3.7V and an individual capacity of 3500mAh. With a discharge rating of 2.86C (10A), these batteries are suitable for equipment that requires a discharge current of up to 10A with a high storage capacity.
The 3500mAh 18650 battery has the maximum capacity allowed by the dimensions of the 18650 battery.
The discharge rate in "C" is a standardized way of indicating the speed at which a battery can be safely discharged without affecting its performance or lifespan. The "C" value is related to the nominal capacity of the battery. The discharge rate is 2.86C (2.86 x 3500mAh capacity = 10A maximum discharge current). The indicated charge rate, also expressed in "C", is 0.5C (0.5 x 3500mAh = 1.75A).
The battery has a flat head, suitable for making battery packs by spot welding and weighs 46.78 grams.
The set is delivered with a plastic storage box, designed to protect the batteries against mechanical shock and short circuits during transport or storage.
Specifications:
Battery type: Lithium Ion
Format: 18650
Model: INR18650-MJ1
Nominal voltage: 3.7V
Charging voltage: 4.2VDC
Discharge voltage: 3.0VDC (2.5V maximum)
Internal resistance: 28mΩ
Capacity: 3500mAh
Discharge rate: 2.86C (max. 10A)
Charging current: 0.5C (max. 1.75A)
Protection: Without integrated protection circuit (use with devices that have protection is recommended)
Weight: 46.78g (per battery), 105.98g total 2 batteries and case
Operating temperatures: charging 0°C – 45°C, discharging -20°C – 60°C
Dimensions mm: 65 x 18mm
Use:
Use a compatible charger for Li-Ion 18650. Do not overcharge or leave unattended while charging.
Store batteries in the included protective case in a cool, dry place. Avoid extreme temperatures.
Check compatibility with your device before use. Do not mix new and old batteries or batteries of different capacities.
Do not puncture, short-circuit or dispose of in fire. Replace batteries if you notice any deformation or leakage.