Here’s a table comparing the two APC UPS models from UPSCentre:
| Feature | APC SMT1500IC | APC SMT1500I |
|---|---|---|
| Model | APC Smart-UPS 1500VA LCD with SmartConnect | APC Smart-UPS 1500VA LCD |
| Product Link | SMT1500IC | SMT1500I |
| VA / Watt Capacity | 1500VA / 1000W | 1500VA / 1000W |
| Display | LCD | LCD |
| SmartConnect Cloud | ✅ Yes | ❌ No |
| Network Management Slot | ✅ Yes | ✅ Yes |
| Output Waveform | Pure Sine Wave | Pure Sine Wave |
| Form Factor | Tower | Tower |
| Typical Runtime @ 100W | ~70–80 minutes | ~70–80 minutes |
| Price (inc. VAT) | £474.00 | £405.00 |
| Price (ex. VAT) | £395 | £338 |
| Delivery | Free delivery (usually 1–2 working days) | Free delivery (usually 1–2 working days) |
Summary
• The SMT1500IC includes SmartConnect for cloud monitoring, which is useful if you want email alerts or remote UPS management.
• The SMT1500I is otherwise similar in specs and cheaper by roughly £57 ex. VAT if you don’t need cloud features.Yes, both the APC SMT1500IC and SMT1500I are line-interactive UPS systems.
✔ What “Line-Interactive” Means:
• Automatic Voltage Regulation (AVR): Corrects under- and over-voltage conditions without switching to battery.
• Fast (near-zero) transfer time: Typically around 2–4 milliseconds — fast enough that most systems won’t notice.
• Efficient and reliable: Ideal for environments with occasional power fluctuations or brownouts.✅ Summary:
Model Line-Interactive? AVR? Near-Zero Transfer Time?
SMT1500IC ✅ Yes ✅ Yes ✅ Yes (~2–4 ms)
SMT1500I ✅ Yes ✅ Yes ✅ Yes (~2–4 ms)
Both are well-suited to protect sensitive servers, networking gear (like your UniFi and Starlink), and your GMKtec K8 mini PC.