| MH-2A4 | MH-C204GT | MH-C204F | MH-C204W | MH-C401FS |
| Smart Charger | No | Yes | Yes | Yes | Yes |
| Type of Charging | Slow Current Charge | Flex Negative Pulse | Pulse Charging | Revolutionary Four Phase Charging Circuitry | Flex Negative Pulse |
| Detection | None - Manual | Moving Window Negative Delta V | Negative Delta V | Negative Delta V, Zero Delta V and Temperature termination | Moving Window Negative Delta V |
| Number of batteries charged | 2 or 4 batteries | 2 or 4 batteries | 2 or 4 batteries | 2 or 4 batteries | 1, 2, 3 or 4 batteries. |
| Battery Voltage Supported | 1.2 to 1.4 V | 1.2 to 1.4 V | 1.2 to 1.4 V | 1.2 to 1.4 V | 1.2 to 1.4 V |
| Type of Charge Rate | Slow Gentle Charge | Fast Charge | Fast Charge | Fast 1 Hr Charge when charging 2 Batteries. Slower 2Hr Charge when charging 4 Batteries
| Fast and Gentle Charge Rate ( Manual Switch) |
| Charging Time | 25 - 39 hours - Slow Gentle Charger | About 4 Hours. | About 3 hours. | 1 Hr - 2 Batteries
2 Hr - 4Batteries | About 100 minutes. |
| Trickle Charge | No | Yes | Yes | Yes - has a new Maintainence Trickle Charge. | Yes |
| Battery size supported | AA, AAA | AA, AAA | AA, AAA | AA, AAA | AA, AAA |
| Battery Type Supported | NiMH, NiCD | NiMH, NiCD | NiMH, NiCD | NiMH | NiMH, NiCD |
| Charging Current | 80mA (2 Cells)
50MA (4 Cells) | 400 mA | 500mA | 2000 mA - 2 Batteries
1000 mA - 4 Batteries | Fast AA-1000mA
Fast AAA-500mA
Gentle AA-300mA
Gentle AAA-300mA |
| Trickle Current | N/A | 24mA | 24mA | 50mA | 50mA |
| Battery Rescue Function | No | No | No | Yes - Unique function to rescue or revive old or infrequentl used ) NiMH Batteries | No |
| Alkaline Battery Detection | No | No | No | Yes | No |
| Standard Power Type | Wall Plug -110V 60Hz | AC Adapter - 110V 60Hz | AC Adapter - 110V 60Hz | Built in 100~240V 50/60 Hz World Voltage Capable Power Supply. Comes with a standard US 6" Cord with US 2 Prong Plug that can be adapted to other Countries with a simple adapter | AC Adapter - 110V 60Hz |
| Certification | UL Listed | UL Listed | UL Listed | Globally Certified and compliant to nearly every major safety agencies in the world. European CE, GS, GB, CBUnited States UL, FCC, Australa DOIR, C-TICK, Argentina S, etc... | |
| Input Voltage / Current | 110V 60Hz - 100mA | 12V DC - 300mA | 12V DC - 500mA | 100~240V 50/60 Hz | 12V DC - 1000 mA |
| Foreign Travel | No | International traveling adapter available. | International traveling adapter available. | Yes - World Voltage Capable | International traveling adapter available. |
| Battery Conditioner | No | No Manual but Automatically conditions while charging. | Yes - Manual Selectable | Yes - Manual Selectable | No Manual but Automatically conditions while charging. |
| Discharge Capability | No | No | Yes | Yes | No |
| Car / Mobile Support | No | Yes | Yes | No - However an optional DC to AC converter is available to allow car 12 DC operation. | Yes |
| Available as stand-alone charger | Yes | Yes | Yes | Yes | Yes |
| Available as battery / charger kit | No | Yes | Yes | Yes | Yes |
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