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  1. #1
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    L&M charger compatibility with NR Digital Headtrip 6V battery?

    Hello, and thanks for all the helpful DIY information on this board.

    Question: I have a spare L&M Multi-Chem charger for my two year old Arc NIMH. I just bought a 6V, 10aH battery from batteryspace that I'm planning to use with my old NR Digital Head Trip with a 2 conductor head. Can I use the L&M charger on this battery? The back of the charger says "Output: 7.2 - 15V, 1.8A", so I'm thinking I can't since my battery is only 6V?

    I have the old NR trickle charger, but it's not very "smart", and I don't think it would charge as fast asa the L&M. It doesn't say how fast it charges, but I'm pretty sure it's not as fast charging as the L&M charger.

    Another question: If I can in fact use the L&L charger, are there any tricks or issues with re-wiring it to work on the 6V battery? I'm assuming I can just take the female plug off the NR charger and put it on the L&M charger with the assistance of a multimeter?

  2. #2
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    The new 6V battery is NiMH by the way.

  3. #3
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    Many NiMH battery fast chargers use a thermistor to keep them from overheating upon charging. Your battery is likely only a 2-pin version (+/-) that does not have a thermistor and, consequently, is not a candidate for rapid charging using a thermistor.

    This isn't a good match.

  4. #4
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    So, any battery pack without a thermistor is not a good match for a rapid charger? This is the battery I ordered: http://www.batteryspace.com/index.as...ROD&ProdID=435

    If I'd ordered this one, I would have been okay? http://www.batteryspace.com/index.as...OD&ProdID=4456

    Is the L&M multi-chem really a rapid charger?

  5. #5
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    Quote Originally Posted by rturanc
    So, any battery pack without a thermistor is not a good match for a rapid charger? This is the battery I ordered: http://www.batteryspace.com/index.as...ROD&ProdID=435

    If I'd ordered this one, I would have been okay? http://www.batteryspace.com/index.as...OD&ProdID=4456

    Is the L&M multi-chem really a rapid charger?
    Yes, it is a rapid charger, but it uses a thermistor to do that. Those batteries you linked don't have a thermistor (one does have a thermal fuse, though, which is different). You definitely can get non thermally based rapid chargers, but that is not what you asked...

  6. #6
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    Oh, okay. Thanks for the clarification. What is the danger of using a rapid charger with a thermistor?

  7. #7
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    Reason I ask is, I bought another one of these for a friend to fit his NR system. I believe it's an Digital Evolution with smart charger. I talked to NR, and they said it should not be an issue?

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