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| How do we know when the batteries are fully charged when using the Maha MH-C490F 9V Battery Charger ? |
| | The LED's will displays green - that indicates that the batteries are fully charged. |
| How fast will the Maha MH-C490F 9V Charger charge 9V rechargeable batteries ? |
| | The MH-C490F charger can charge 1 to 4 batteries in under 2 hours. |
| Will the Maha MH-C490F 9V Charger overheat the 9V rechargeable batteries by charging them so fast? |
| | The patented chip set software regulates the batteries to keep them from overcharging thus preventing overheating. |
| How does the Maha MH-C490F9V battery charger work ? |
| | The Maha MH-C490F 9V battery charger uses Powerex's patented software technology to monitor and charge 9V NiMH rechargeable batteries to their full capacity. The Maha MH-C490F uses Negative Delta V, Zero Delta V, Temperature and Timer control for exact and safe charging. |
| What if I wanted to charge only 1 or 2 batteries? |
| | The Maha MH-C490F 9V charger has 4 independent charging bays that can charge 1,2,3, or 4 9V ( nine volt ) rechargeable batteries |
| I need to charge more than four batteries at a time. Does Maha make a larger version? |
| | Yes, check out the Maha MH-C1090F model that charges up to ten 9V batteries at a time. It has all of the features of the MH-C490F 9V charger except it does ot have the car 12V capability. However you can still use a 12V to AC converter for 12V operation. |
| Can I use this charger Internationally ? |
| | Yes, the MH-C490F 9V charger can be purchased with an International adapter and then a regional plug adapters (changers) may be needed. We also offer regional AC adapters available under the accessory section. |

| Can I leave the batteries in the Maha MH-C490F 9V battery charger after it is finished charging? |
| The MH-C490F 9V battery charger is designed to automatically switch to trickle charge when the batteries are finished charging, however it is suggested that you don't leave the charged 9V batteries in the charger for more than 18 hours. |

| What types of 9V batteries can the Maha MH-C490F 9V Charger charge? |
| The MH-C490F can charge 8.4V, and 9.6V Ni-MH rechargeable batteries. *The MH-C490F is designed to charge only Ni-MH rechargeable batteries* |
| How is the Maha MH-C490F 9V charger different than other 9V chargers ? |
| | The MH-C1090F can charge up to Four 8.4 or 9.6V NiMH rechargeable batteries in under two hours using four independent channels, completely and without overcharging. Plus the Maha MH-C490F will often revive old batteries that other so called 9V chargers fail to charge anymore. |
| Can I charge 9V alkaline batteries in the Maha MH-C490F 9V battery charger ? |
| | No, the MH-C490F 9V battery charger can not recharge alkaline batteries. |

| Does the MAHA MH-C490F 9V battery charger work in the car? |
| Yes it can ! The MH-C490F 9V battery charger was designed with a special circuit to allow it operate from a car lighter plug. This is a first in 9V battery chargers. |
| What is the warranty for the Maha MH-C490F 9V Battery Charger ? |
| One Year Warranty on the Mh-C490F 9V Charger. |