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Topic Options
#10360 - 07/30/10 10:41 AM Battery Charger
William Dorrity Offline
New Member

Registered: 07/30/10
Posts: 1
Loc: SC United States
I have a trickle charger which I would like to connect to my cigarette lighter. Is this wise? Bill D.

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#10365 - 07/30/10 02:51 PM Re: Battery Charger [Re: William Dorrity]
N5334T Offline
Second in Command

Registered: 07/22/10
Posts: 115
Loc: Oklahoma
First off: Welcome William smile

On a plane, I dunno cause I'm new.

On a car? it's ok but i still don't like to do it. I prefer to get the trickle charger that connects direct to the battery. That way the juice goes right into the bat, and doesnt put added wear and tear on the electrical system. You have to think about fuses and such wearing out faster if they always have juice on them.

Also, I'm not sure how it is in a Cessna (or any plane) but some cars the trickle charges like this wont work cause the key has to be on to allow the circuit to be active.


My suggestion: Go to walmart/autozone/bigbox whoever and buy an add on 12v accessory power socket. Just like your cigarette lighter but designed for direct wire and higher power levels.

Wire it directly to your battery, and install a 25amp inline fuse in it. This will allow you to charge your battery directly with the charger, and also give you a SAFE extra power socket for in flight. This method is acceptable for cars, tractors, homebuilt projects and what have you. I use a setup like this to help power a Ham radio station when in the field.

EDIT:// per my 1964 172 owners manual:

" A ground service plug receptacle may be installed to permit the use of an external power source for cold weather starting and during lengthy maintenance of the electrical system.

Before connecting a generator type external power source it is important that the battery switch be turned ON. This will allow the battery to absorb transient voltages which otherwise might damage the transistors in the audio amplifier. When using a battery type cart, the battery switch should be turned off. "


This is just my .02 street though so please wait for a more professional opinion. I can't even start my plane yet, let alone fly if I could! Im just learning how now. I do not know about the regulations on planes yet, so please understand that while this WOULD be acceptable, it may not be LEGAL in the eyes of the FAA... I dunno.

But at any rate, I hope it gives you food for thought wink But I personally WOULD NOT run a charger through the factory cigarette lighter for my reason of system fatigue listed above.




Edited by N5334T (07/30/10 03:06 PM)
_________________________
Cessna 172E - Hangar Queen since 1989
0-300 145hp
Vintage Avionics:
King KMA-12B Audio Panel
Narco ADF-29R
Narco Mark 12A
Narco Omnigator Mark III
Narco AT150 TSO Transponder with altitude encoder.

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#10381 - 07/31/10 09:51 PM Re: Battery Charger [Re: William Dorrity]
D Latch Offline
Safety Pilot

Registered: 07/15/10
Posts: 95
Loc: Upland,Ca.
I think your master switch is going to prevent it from working.If that does not I would not put one on my airplane un monitored.

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#10461 - 08/02/10 12:01 PM Re: Battery Charger [Re: D Latch]
Smutny Offline
Safety Pilot

Registered: 02/18/10
Posts: 90
Loc: Seattle, WA
Since the Eagle doesn't fly much in the Winter, we have a trickle charger connected directly to our battery. We modified it so that the end of the charger has a headset plug, we run the wire through the air vent and the receptacle plug is on the rear seat back with its own circuit breaker. That is wired directly to the battery. Works like a charm.

However... The Eagle is Experimental so chat with an A&P to make sure something like that can be done for your Cessna.
_________________________
John Smutny
Wolf Pitts S-1 N240WP
Cessna 172D N2134Y
Christen Eagle II N16EE

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#10485 - 08/03/10 01:09 AM Re: Battery Charger [Re: Smutny]
Nightowl Offline
Club Sponsor/Speed Demon
Gold Pilot

Registered: 02/14/10
Posts: 1826
Loc: Northwest lower Michigan
A lot pilots I know, including myself, use the Battery Minder that can be seen at the link below:

http://www.northerntool.com/shop/tools/product_200332201_200332201

I attached the cable directly to the battery and connect it to its control unit through the oil access door. They do now offer a more expensive "aviation model", but many of us have been using this "non-aviation" unit for years with good results.

John
_________________________
CP-ASEL-IA
'77 C172N, AirPlains 180 hp conversion

Our sigmap has been flown entirely using aircraft with capabilities at or below those of the C-172.


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#10498 - 08/03/10 12:24 PM Re: Battery Charger [Re: Nightowl]
Smutny Offline
Safety Pilot

Registered: 02/18/10
Posts: 90
Loc: Seattle, WA
Actually, that's what we use too, couldn't remember the Battery Minder name.
_________________________
John Smutny
Wolf Pitts S-1 N240WP
Cessna 172D N2134Y
Christen Eagle II N16EE

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#12039 - 09/12/10 08:13 AM Re: Battery Charger [Re: Smutny]
joe hal Offline
New Member

Registered: 08/25/10
Posts: 16
Loc: Tunica
That is 12V charger. It does it work on 28V (172R)
_________________________
joe

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#12041 - 09/12/10 08:15 AM Re: Battery Charger [Re: joe hal]
joe hal Offline
New Member

Registered: 08/25/10
Posts: 16
Loc: Tunica
I meant Does it work on 28V as in case of 172R model?
_________________________
joe

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#12048 - 09/12/10 03:16 PM Re: Battery Charger [Re: joe hal]
Randy Crosby Offline
Second in Command

Registered: 05/17/10
Posts: 127
Loc: Trapper Creek, Alaska
12v chargers do not work on 24v batteries.

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#12060 - 09/13/10 04:06 AM Re: Battery Charger [Re: Randy Crosby]
joe hal Offline
New Member

Registered: 08/25/10
Posts: 16
Loc: Tunica
Can I use any (bought from) 24V charger to top up my 28V battery
?
My last question was pointed to the previous chat about the Battery Minderand that is 12V charger.
_________________________
joe

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#12071 - 09/13/10 10:53 AM Re: Battery Charger [Re: joe hal]
Randy Crosby Offline
Second in Command

Registered: 05/17/10
Posts: 127
Loc: Trapper Creek, Alaska
Yes, any 24v charger will work. Depending on your battery issue, a trickle charger(low amperage) may not be enough. I personally don't recommend charging a battery in the aircraft as any number of problems, however rare, could occur that can harm your aircraft. A battery, especially a 24v packs a lot of punch.

If your battery and electrical system is in airworthiness condition, you should only need to charge/service the battery at annual or if you left the master switch on and drained the battery. If you did the later, you should remove the battery and service it properly for such an event. If you constantly have a low or dead battery then you should investigate and correct the problem instead of trickle charging all the time.

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#12073 - 09/13/10 12:14 PM Re: Battery Charger [Re: Randy Crosby]
joe hal Offline
New Member

Registered: 08/25/10
Posts: 16
Loc: Tunica
Thanks Randy,
My battery is fine. I was just checking it for my information for future.
I only had low battery once in winter, engineers jump started it and then a good flight did the job.
Thanks again, Joe
_________________________
joe

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#12170 - 09/15/10 09:51 PM Re: Battery Charger [Re: joe hal]
RodneyHooverCFI Offline
The Cessna Sensei
Gold Pilot

Registered: 02/16/10
Posts: 1645
Loc: Pasadena, MD
Originally Posted By: johal
Can I use any (bought from) 24V charger to top up my 28V battery
?
My last question was pointed to the previous chat about the Battery Minderand that is 12V charger.

The battery is not 28v, only the alternator puts out 28v. The bnattery is only 24v.
_________________________
Flight Instructor- ASEL and Instrument Airplane
Commercial Pilot with Instrument Rating- ASEL & AMEL
Assistant Chief Instructor at W00, Freeway Aviation.
States I've flown to-

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#12171 - 09/15/10 09:57 PM Re: Battery Charger [Re: RodneyHooverCFI]
Randy Crosby Offline
Second in Command

Registered: 05/17/10
Posts: 127
Loc: Trapper Creek, Alaska
Actually a properly charged (24v) battery is 26.4 volts as each cell is 2.2 volts but now I think we are splitting hairs?!? grin

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#12174 - 09/15/10 10:12 PM Re: Battery Charger [Re: Randy Crosby]
RodneyHooverCFI Offline
The Cessna Sensei
Gold Pilot

Registered: 02/16/10
Posts: 1645
Loc: Pasadena, MD
Oh really? I don't recall hearing that before, although I do recall a teacher calling 24v (or 12v for the other size) is the nominal charge, which is less than when it is fully charged. Knowing how technical he was, he probably mentioned the fully charged voltage tho. Learn or relearn something every day...
_________________________
Flight Instructor- ASEL and Instrument Airplane
Commercial Pilot with Instrument Rating- ASEL & AMEL
Assistant Chief Instructor at W00, Freeway Aviation.
States I've flown to-

Airport list map:
http://goo.gl/maps/qh1Tc

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