Re: Small electrical motor question. 12 volts 230 Watts on Peg-Perego power wheel jeep

thank you!

since I had the battery back on the charger while reading at 10vs, I
decided to charge i for 2 hours at 2a,

it now reads 12:40 volts

question. since its jsut over 12 volts.. is this good enough or a full
charge?

Most info I have read on the net, including your posts says to charge
it at around 14 volts.


On Sat, 30 Apr 2005 14:26:16 +0800, "Rheilly Phoull"
<Rheilly@xxxxxxxxxxx> wrote:

>
>
> One day rutman got dressed and committed to text
>
>> Hello.
>>
>>
>> To being with, please accept my apologies for the noobie questions I
>> am about to make.
>>
>> Heres the info.
>>
>>
>> 1. Two small electrical motors rated 12volts 230 watts powers a
>> Peg-Perego electrical jeep. it looks like one of them power wheels
>> ride on toys. Since the original battery died, I started asking
>> questions and reading previous usenet posts as to replacing the
>> expensive power wheels battery for an ordinary car battery.
>>
>> I received quite a few replies. Some were cons others pros regarding
>> the car battery adaptation idea. Apparently this has been done
>> sucessfully before my many people. Some replies were concern as to the
>> safety etc. Following advice from this group as well as having read
>> meny hours of googles :), I decided to install a new heavy duty deep
>> cycle GEL battery. It cost me almost triple as much as buying a
>> regular 12vs car battery. However, from my own personal research as
>> other people advices as well, it looks like this was the way to go.
>>
>> I also bought an inline 40a fuse and installed it on the positive
>> cable.
>>
>> My kid took out the jeep for a ride, and he was having a blast,
>> until..... the jeep started slowing down. WAYYY down.. almost to a
>> crawl. This is odd, i told myself.. it surely did not seem like the
>> so called deep cycle battery lasted any longer that the orginal small
>> power wheel jeep battery! we are talking like 40 minutes of play time
>> with my kid going around for a ride or two.
>>
>> So I popped the hood. Checked all the cables. The positive and
>> negative cable were warm but not Hot.. good sign I guess. I touched
>> the battery just to get a touchy feeling.. cold.. I went under the
>> vehicle and touched both motors. I was thinking that maybe the motors
>> were over heating or something as that, which might caused the jeep to
>> crawl. They were warm , not hot at all.
>>
>> Took out my volt meter. Checked the battery for power.
>>
>> It was reading at 11.40 volts!. thats almost a full charge.!
>>
>> now heres the really odd part.
>>
>> left the jeep sitting there for about 40 minutes while i went to a
>> local canadian tire to purchase a battery charger ( I didnt have one,
>> and since I just bought this deep cycle.. arghh.. more money )
>> came back. I was unpacking the goodies and noticed that my son had
>> already jumped back onto the truck and he was doing some wheelies! all
>> of sudden the power came back for about 5 minutes before dropping to a
>> crawl again. Check the battery's voltage. It was reading at 11.20
>> volts. Had my son drive the jeep until it wouldnt move anymore to see
>> how fast the deep cycle battery drained.. when the jeep coulnt move
>> anymore and I connected the volt meter, it read at 10.20 volts.
>>
>>
>> now here are my questions.
>>
>>
>> If the battery is reading at 11.40 volts ( almost a full charge ) why
>> are the motors turning sooo slow.
>>
>> I know that the motors are rated at 12v 230 watts.. so if the battery
>> drops below 11 volts should this caused the motors to simply quit
>> turning the wheel?
>>
>>
>> I didnt check for the battery Ah rating. I took it for granted that a
>> deep cycle battery meant for a small boat, rideon lawn mover , or even
>> a small vehicle should be enough to put out enough juice to run two
>> 12v motors rated at 230watts... but maybe i am wrong?
>>
>> the original batteries the jeep uses are 12v 10Ah....
>>
>> Could it be that the deep cycle battery may be defective? could this
>> explain the drop of power being supplied to the motors?
>>
>>
>> Finally.
>>
>>
>> whats the best setting to charge the deep cycle battery? My charger
>> has a setting for 10a and 2a. I am currently using 2a setting. (
>> trickle charge )
>
>To me the figures dont quite 'gell', since 2 motors at 230watts in theory
>would pull 30amps or more dependant on the wire capacity (thickness). If the
>original batteries were 10a/h then if the motors were used at full capacity
>the they would not have lasted long (the 2 motors would take 30a/h). It
>probably would come down to the method of speed control used and very likely
>the total available power of the motors was not utilised. Also the symptoms
>described would fit the battery not being fully charged, you should be able
>to charge it at 10amps, monitor the volts and when when it is around 14v and
>very little current flowing it will be fully charged. Of course there is
>much more to charging than that but it is a rough and ready way to check.
>See http://www.batteryfaq.org/carfaq9.htm#adjust for more info on batteries.
>I think I would start with a known full charge and check again.

.

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