For a small business, a power outage means more than inconvenience. It can mean lost sales, spoiled stock and data problems. A battery backup can keep the essentials running.
Step 1: Decide what must keep running
- Payments: card terminal, POS system, till
- Connectivity: router, modem, phone system
- Refrigeration: fridges and freezers with stock
- Security: alarm system, cameras, access control
- Workstations: a laptop or computer to keep serving customers
- Lighting: a few LED lights for safe operation
Step 2: Estimate power and energy
| Device | Typical power |
|---|---|
| Card terminal + router | 20–40 W |
| POS computer | 50–150 W |
| Security cameras (4) + recorder | 40–60 W |
| Commercial fridge | 150–400 W running |
| LED lighting (6 bulbs) | 50–60 W |
Multiply each by the hours needed, add them up, and divide by 0.85 for losses. Four hours of a till, router, cameras and lights could need around 1–1.5 kWh. Adding refrigeration can double or triple that.
Step 3: Choose the right setup
- Small shop or office: a 1–2 kWh power station can keep payments, internet and lights running
- Cafés and food shops: a larger, expandable battery with enough output for fridges and freezers
- Longer outages: add solar panels to recharge during the day
Step 4: Plan the practical details
- Place the battery near the essential equipment, in a ventilated, dry space.
- Label which devices go on backup power.
- Test the setup every few months.
- For permanent connection to your electrical system, use a qualified electrician.
Important note
For critical systems such as servers, medical equipment or large refrigeration, speak with a specialist about professional UPS or backup systems designed for your needs.
FAQ
Does a battery switch on automatically?
Some units offer pass-through or UPS modes. Check the switchover time for sensitive equipment.
Is it noisy like a generator?
No. Batteries are silent and produce no fumes, so they can be used indoors.