Mascot 3540 12V/20A vs Mean Well NPB-450-12
Heavy 12V chargers for marine house banks, large leisure packs and standby UPS. Both manufacturers do this well - the choice usually comes down to thermal behaviour and how the case is mounted.
| Spec | Mascot 3540 12V/20A SLA | Mean Well NPB-450-12 |
|---|---|---|
| Charge current | 20 A | Up to 27 A (programmable) |
| Output stages | 3-step CC/CV/float, temperature-compensated | 8-stage programmable with equalisation |
| Cooling | Convection (silent) | Forced fan above 15A |
| Form factor | Wall-mount metal case, terminal block | Desktop with IEC inlet |
| Best fit | Fixed installs, silent telecom / marine cabinets | Workshop bench, programmable lab use |
| Warranty | 1 year | 3 years |
Our verdict
Pick the Mascot 3540 for an install where silence and a fixed wall-mount footprint matter (marine, telecom, security). The NPB-450 wins when you want a programmable charger you can re-task across battery types.
View the Mascot 3540 12V/20A SLA £280.87 + VAT · £337.04 Inc. VAT
- UK stock, next-day available
- 1-year warranty
- UK engineers: 01189 795319