- By gtmbhuwan
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| Feature | OpenUPS | OpenUPS2 | NUC-UPS |
| Input Voltage | 6-30V | 11-24V | 6-38 |
| Output Voltage | 5-24V (programable) | 12* | 12V |
| Architecture | Buck/Boost | Boost | Buck/Boost |
| Max Power | 6A | 5A | 5A |
| Battery Chemistry | Li-Ion, Li-Po, LIFEPO4, Lead Acid | LiFePO4, Li-Ion** | Li-Ion |
| Battery Charger | Multiple chemistry charger | 3 state charger | 3 state charger |
| Battery balancing | Yes | Yes | Yes |
| USB Interface | Yes | Yes | Yes |
| SMBUS | Slave | Slave | – |
| Coulomb counting (fuel gauge) | Yes | Yes | Yes |
| Temperature monitoring | On board | For each cell | For each cell |
| Battery design | External removable | Onboard removable | Onboard removable |
| Footprint | Custom | 2.5″ drive footprint | 2.5″ drive footprint |
| Windows compatible | Yes | Yes | Yes |
| Linux compatible | Yes | Yes | Linux API planned |
| Motherboard ON/OFF pulse control | Yes | Yes | Yes |
| Deep Sleep power consumption | <50uA | 1uA | 5uA |
| Availability | Long life | Long life | New product |
| Notes: * If V(in) > V(out) then V(out) is unregulated (Vin=vout) If V(in) < V(out) then V(out) is 12V regulated ** Li-Ion chemistry supported with hardware modification, consult manual. | |||
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