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10-11-2005 10:59 PM  13 years agoPost 1
Amar

rrNovice

Chicago, IL

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Thanks everyone...

I have purchased a voltmeter. With a 4.8V receiver battery, what voltage would be the lowest amount recommended before taking another flight. In other words, at what reading should I know not to take another flight.

For the 12V lead acid battery, what is the minimum charge amount before re-charging

Thanks!
Amar

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10-11-2005 11:09 PM  13 years agoPost 2
A. Bundy

rrElite Veteran

Aurora,IL. 30W/SW of Chicago

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I can't give you a voltage but I will reccomend that you buy a Ace voltmeter with load buttons.I think that gives you a more accurate reading.Press the high load button and if the arm stays in the green,another flight is ok.

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10-11-2005 11:12 PM  13 years agoPost 3
zoom boy

rrKey Veteran

N.E. Lincolnshire UK

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4.8v is what you should stop flying at

A 4.8v pack will actually be arround 5.8-6v when you have just charged it, and it will drop while in use, when it gets to 4.8 I would stick it back on charge.

A better idea is to get a purpose made battery monitor, this is simple to read, they usually have a row of LEDs, green, amber and red, obviously if it goes to red, dont fly with it, swap the batteries for fresh.

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10-12-2005 01:39 AM  13 years agoPost 4
ScareCrow_Delta

rrVeteran

Sebastian, FL

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4.8v is what you should stop flying at
The NiMh and NiCads are at optimum at 4.8 volts (on a 4.8v packs). When it's higher than 4.8V, it's considered full but it will drop a lot to 4.8v where it will stay almost constant until it's almost out, then it will drop the voltage from about 4.8v to really low. The pack is considered dead at 4.0v. But, the voltage will drop from the nominal value of about 4.8v to 4.0v really fast when it's going dead.

~~~~ Defy the laws of gravity....gracefully ~~~~

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10-12-2005 01:41 AM  13 years agoPost 5
ScareCrow_Delta

rrVeteran

Sebastian, FL

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http://www.rcbatteryclinic.com

~~~~ Defy the laws of gravity....gracefully ~~~~

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10-12-2005 01:53 AM  13 years agoPost 6
Yug

rrMaster

UK. Herts

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All depends on what servos you are running.
If you are looking for a figure, then 4.6v

For lead acids, just keep them topped up.

Get a volt-spy.

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10-12-2005 02:51 AM  13 years agoPost 7
carcrasher

rrElite Veteran

east coast

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The best charger for the 12v gel cells is a charger from an auto store.The "battery tender jr" works great. I got mine thru Snap-on, pricey as hell but works great. I can leave the battery on the charger forever and it won't over charge it plus I can use it for my car. If you have a motorcycle or atv you can use the charger to keep that battery topped off also.

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