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Charging 6V battery with 4.8V Charger

Old 01-14-2007, 08:11 AM
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mouthpiec
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Default Charging 6V battery with 4.8V Charger

Hi,
I have a 6V battery (for a Futaba RX), but I have the standard Futaba charger which is 4.8V. Will it be possible to charge the battery with this charger?

thanks in advance
sandro
Old 01-14-2007, 08:33 AM
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Newc
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Default RE: Charging 6V battery with 4.8V Charger

Yes. It works fine.
Old 01-14-2007, 08:36 AM
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Default RE: Charging 6V battery with 4.8V Charger

thanks for the super fast reply
Old 01-14-2007, 09:19 AM
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Geistware
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Default RE: Charging 6V battery with 4.8V Charger

It will just talk longer
Old 01-14-2007, 02:18 PM
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Default RE: Charging 6V battery with 4.8V Charger

It will just talk longer
Like 3-4 days longer! [sm=drowning.gif]
Old 01-14-2007, 02:30 PM
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Default RE: Charging 6V battery with 4.8V Charger

I have tested my JR wall wart chargers rated at 50 mA. When connected to a 5-cell pack, they charge at 35 mA instead of 50. So for a 600 mAh pack, it will take 17 hours instead of 12. This assumes the pack is fully discharged to begin with. High capacity packs (e.g. 2500 mAh) will indeed take days to charge.
Old 01-14-2007, 02:42 PM
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Default RE: Charging 6V battery with 4.8V Charger


ORIGINAL: DMcQuinn

I have tested my JR wall wart chargers rated at 50 mA. When connected to a 5-cell pack, they charge at 35 mA instead of 50. So for a 600 mAh pack, it will take 17 hours instead of 12. This assumes the pack is fully discharged to begin with. High capacity packs (e.g. 2500 mAh) will indeed take days to charge.
the one i bought is a 2400mah!
Old 01-15-2007, 07:48 AM
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Default RE: Charging 6V battery with 4.8V Charger

Here's some data instead of hearsay...

In getting a plane ready for the conversion to the Spektrum DX-7 system I charged both batteries yesterday. The batteries are Electrodynamics 1500 mAh 5-cell 6v Ni-Cads. The chargers are standard Hitec wall warts showing 55 mA at 4.8 v for Rx and 10.8 v, also at 55 mA, for Tx on the labels.

The batteries were charged using the Rx side of the above chargers for 14 hours yesterday with the batteries removed from the chargers at 9:00 last night. I just took readings (under load) using an Electrodynamics digital meter http://www.electrodynam.com/cgi-loca...205+1171822961 - 10 1/2 hours after removing the batteries from charge, and the voltages are 6.62 v and 6.63 v.

The above is consistent with my previous experiences... While it MAY take a bit longer to charge a 6 v battery pack with a charger nominally shown to be for 4.8 v batteries, it is not significantly longer, and nowhere near the extreme times (ranging from 'days' to '3 - 4 days longer') stated in other posts.

Get yourself a good digital voltmeter that will measure the battery under load and use that for your evaluations and confirmation of my data as well as before each and every flight.

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