Battery Guides
Find the Right Battery for Your Device
Choosing a battery isn’t always as simple as matching its shape. Batteries that look similar can differ in size, voltage, chemistry, capacity and intended application.
ArcEin Battery Guides are designed to help you understand common battery types, compare similar models and identify the specifications you should check before purchasing.
Whether you’re looking for a coin cell for a small electronic device, rechargeable AA batteries for everyday use, or a specialised lithium battery for industrial equipment, start with the guides below.
Coin Cell Battery Guides
Coin cells are widely used in remotes, calculators, weighing scales, medical devices, sensors, computer motherboards and other compact electronics.
CR2032 vs CR2025 vs CR2016 — What’s the Difference?
Understand the dimensions, capacity differences and why batteries with the same 20 mm diameter aren’t automatically interchangeable.
CR-Series Coin Cell Size Guide
Learn how model numbers such as CR2016, CR2025, CR2032, CR2450 and CR2477 relate to battery dimensions.
Lithium Coin Cell vs Alkaline Button Cell
A practical explanation of common coin and button-cell chemistries and why voltage and chemistry should be checked before replacement.
Panasonic Coin Cell Battery Size Guide
AA, AAA & Rechargeable Battery Guides
Alkaline vs Rechargeable Batteries
Understand the differences between disposable alkaline and rechargeable batteries and where each type may be appropriate.
AA vs AAA Batteries
Compare their physical dimensions, typical capacity differences and common applications.
USB-C Rechargeable AA & AAA Batteries
Learn how batteries with built-in USB-C charging work and what specifications you should check before using them in a device.
Lithium Battery Guides
18650 Lithium-ion Battery Guide
Understand common 18650 specifications including voltage, capacity, protected vs unprotected cells and why device compatibility matters.
10440 Battery Guide
Learn about this AAA-sized lithium-ion cell and why it should not be confused with a conventional 1.5V AAA battery.
This is particularly important because many 10440 lithium-ion cells have a substantially different nominal voltage from ordinary AAA batteries.
Industrial Battery Guides
ArcEin also supplies specialised batteries used in industrial electronics, PLCs, CNC machines, memory-backup systems and other equipment.
Li-SOCl₂ Battery Guide
An introduction to lithium thionyl chloride batteries, their characteristics and common industrial applications.
PLC & CNC Backup Battery Guide
Learn what information to check when replacing a battery used in PLC, CNC or industrial control equipment.
For industrial batteries, matching the manufacturer part number, voltage, chemistry, connector and polarity can be especially important.
Can’t Identify Your Battery?
If you cannot find the exact battery you need, contact ArcEin before ordering.
Send us:
- Battery model or part number
- Voltage and capacity shown on the battery
- Equipment/device model
- Clear photograph of the existing battery and connector, if applicable
Email: contactus@arcein.in
Phone: +91 89394 56390
For business or bulk requirements, you can also contact us for availability and quotation.