FUJI NJ-BT8 | MICREX-F Battery Unit 3.6V 1800mAh Lithium

The FUJI NJ-BT8 provides backup power for your PLC memory. This battery unit belongs to the MICREX-F controller family. It preserves user programs and data during main power loss. You can use it to prevent critical data loss in your automation system.

Key Technical Specifications

Below you will find the accurate technical parameters for the FUJI NJ-BT8.

Parameter	Specification
Product Type	Battery Unit
Series	MICREX-F
Battery Type	Lithium (primary)
Nominal Voltage	3.6 V DC
Capacity	1800 mAh
Service Life	5 years typical
Operating Temperature	-20°C to +70°C
Connection	Plug-in connector
Manufacturer	FUJI Electric

The unit measures 35 mm in width and 50 mm in height. Its total depth reaches 20 mm. The FUJI NJ-BT8 weighs approximately 45 grams. This unit contains a single lithium cell with a protective PCB. Energy storage relies entirely on the lithium battery chemistry.

You will find a two-pin connector on the output cable. The battery plugs directly into the CPU or memory module. Consequently, replacement takes only a few seconds. A low-voltage warning appears on the PLC status LED before complete discharge.

Installation and System Integration

You can install the FUJI NJ-BT8 into any compatible MICREX-F CPU. The unit requires no external power or wiring at all. Therefore, it operates completely independently from the main supply. Replace the battery within one month after the low-voltage warning appears.