Plant maintenance
Backup batteries for CNC, PLC, robot and encoder systems
Small backup cells, identified by part number, so a machine does not lose its memory, parameters or absolute position when the cell reaches the end of its life.
About this service
Star Automations is a multi-brand servo motor repair company with 25+ years of work on industrial machines. Backup-battery supply sits beside that work because many of the motors, encoders and controls we see depend on a small cell to hold absolute position or memory. Our servo motor repair page describes the motor work. This page is for the cells themselves.
This service covers backup batteries used in CNC controls, PLC and HMI memory, industrial robot controllers, and absolute encoders. It does not cover high-voltage vehicle or traction battery packs, and it does not cover pack-level BMS work.
Puducherry operations are ISO certified. Send a part number or a photo of the cell and the unit it fits. We will confirm the correct type and, for plant-wide lists, help you plan a one-time or recurring replacement.
Why it matters
When a backup cell is left until it fails, a CNC or robot can lose machine origin, a PLC can lose a programme or a clock, and an absolute encoder can lose multi-turn data. The usual result is unplanned downtime and a longer recovery than a planned cell change. Cells are consumable. Most plants are better served by a model list and a replacement cycle than by waiting for an alarm.
We treat identification of the correct part, and a clear supply path, as the starting point. We are not an OEM service centre. We will tell you what we can supply for the part number you send.
Who it is for
- CNC shops that want a small stock of control and encoder cells, and a reminder cycle.
- Factories and packaging plants with PLC and HMI backup cells across many panels.
- Plants running industrial robots that hold backups in the controller or in the motor feedback.
- MRO and procurement teams who prefer one enquiry for a mixed list, including recurring orders.
How the work runs
- 1. Send the part number. Send the part number, or a photo of the battery and of the nameplate on the control, encoder or robot.
- 2. We confirm. We confirm the cell type and the quantity, including mixed lists for a plant programme.
- 3. You approve. You approve the supply.
- 4. Supply and fitting. We supply the batteries. If you want fitting as well, we can replace them at the machine, or we can give your team the replacement and origin-reset notes that apply to that model.
What to send us
The part number if you have it, a photo if you do not, the machine make and model, the quantity, and whether this is a one-time order or a recurring plant list. Common families we are asked about include Fanuc control and encoder cells, Siemens, Mitsubishi, Heidenhain, Omron, and backup cells used on industrial robot controllers. If your part number is not in that list, still send it. We will confirm. If the encoder, robot or control is already in fault, say so in the enquiry; the cell may not be the only issue.
Frequently asked questions
Which backup batteries do you supply?
We supply small backup cells for CNC controls, PLCs, industrial robot controllers and absolute encoders, identified by the part number or a photograph. Send the number or the photo and we will confirm the type.
Is this the same as high-voltage battery pack work?
No. This page is only for small backup cells that hold memory or absolute position. We do not use this service for high-voltage vehicle or traction packs.
Can we send a plant-wide battery list?
Yes. A spreadsheet with part numbers, machine identities and quantities is enough. Tell us if you want a one-time delivery or a recurring cycle.
Do you fit the battery as well as supply it?
Yes, when you want us to. We can also supply the cells and share the replacement and origin-reset notes for that model so your team can do the change.
What happens if the machine has already lost its origin or programme?
Tell us in the enquiry. A new cell may still be needed, and the machine may also need encoder, control or robot work. We will say what we can do after we see the nameplate and the symptom.
Do you publish battery prices on this page?
No. Prices are not listed here. Send the part numbers and quantities and we will come back with the next step.
Brand names identify the equipment and parts we work on. Star Automations is an independent multi-brand repair and maintenance company and is not an OEM service centre.