LED Bulb
10W default load
0
Premex Sizing Tool
Load Calculator for smarter battery sizing
Pick the appliances you want to run, choose the backup hours you need, and we’ll estimate the recommended battery size and suggest matching Premex products from your catalog.
Quick snapshot
Active load
0W
Battery target
0Wh
System voltage
Backup runtime
Adjust how long the connected load should run.
4 hours
1h6h12h
Appliances
Build your load profile
Use the presets below, then add any custom appliance that is missing.
Ceiling Fan
75W default load
0
Television
120W default load
0
Wi-Fi Router
15W default load
0
Refrigerator
180W default load
0
Washing Machine
500W default load
0
Desktop PC
200W default load
0
Laptop
65W default load
0
CCTV + DVR
90W default load
0
Billing Counter
150W default load
0
Recommended products
Premex matches from your database
Add appliances and backup hours to get product suggestions. If your catalog does not contain structured voltage or capacity specs yet, the calculator will still estimate the battery size and your sales team can confirm the final match.