PROJECT REPORT CS-02 / ENERGY
A radio-silent 24V battery for a nuclear site

Brief
A nuclear site needed 24V battery power for equipment that had to keep charging unattended through winter. Site rules prohibit radio-emitting devices, so the battery could carry no Bluetooth at all.
Requirements
- 24V, 230Ah.
- No radio transmitter of any kind.
- Internal heaters retained for unmanned winter charging.
- Delivery against a tight deadline.
Engineering response
A feature switched off in software does not satisfy a regulator, because the transmitter is still there. We specified a 24V build with the Bluetooth module physically removed, and disabled the active-balance comms to cut standby draw. The heaters and their control logic stayed in.
To meet the deadline by air freight, we also produced a smaller 24V 105Ah version in a custom shell.
Result
A radio-silent battery that meets the site's rules, delivered by air freight in 4 weeks.
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