Child's car not charging

joey1211 · 18 Jan 2020 at 13:11

Any advice on why this isn't charging before it goes to the garage in the sky? Checked all the wires, none seem to be loose.

Charger

Charger goes in here

Mishmash of cable under the seat.

I have a multimeter but will need instructions on how to use it.

ANDARIAL · 18 Jan 2020 at 13:42

Any loose wires?
Batteries `could` be kaput
Try a new charger?

Haze · 18 Jan 2020 at 14:14

Could be all sorts of things

and try this

https://www.google.com/search?q=how...ome..69i57.14475j0j4&sourceid=chrome&ie=UTF-8

godinman · 18 Jan 2020 at 15:48

Any volts directly out of the charger? If there are, what are the voltage across both batteries before and during charging?

Destination · 18 Jan 2020 at 21:32

Might be a ridiculous suggestion but I've seen these where the charger fits in both ways, and it isn't always obvious which way round is correct.
Can it reverse?

moon man · 18 Jan 2020 at 21:40

i need to re educate myself on electronics ,looks like 2 banks of series 18650s in parallel ,wouldnt that charger need to output over 7.4 volts at least 8.4 ?
probably drunk too much

ron3003 · 18 Jan 2020 at 21:48

It's 2 x 6v sealed lead acid batteries. There'll be a fuse somewhere in that lot that's blown, likely a blade fuse or possibly a thermal trip.
Find it and check for continuity.

joey1211 · 18 Jan 2020 at 21:51

Destination said:
Might be a ridiculous suggestion but I've seen these where the charger fits in both ways, and it isn't always obvious which way round is correct.
Can it reverse?

No charger connects via one round connector.

moon man said:
i need to re educate myself on electronics ,looks like 2 banks of series 18650s in parallel ,wouldnt that charger need to output over 7.4 volts at least 8.4 ?
probably drunk too much

It's worked for the past 3 years so I'm guessing no.

moon man · 18 Jan 2020 at 21:52

ron3003 said:
It's 2 x 6v sealed lead acid batteries. There'll be a fuse somewhere in that lot that's blown, likely a blade fuse or possibly a thermal trip.
Find it and check for continuity.

ah ok,saw shape as 6 times 18650s ,bit confused but dosnt take much

joey1211 · 18 Jan 2020 at 21:53

ron3003 said:
It's 2 x 6v sealed lead acid batteries. There'll be a fuse somewhere in that lot that's blown, likely a blade fuse or possibly a thermal trip.
Find it and check for continuity.

I'll have a look tomorrow.

little_wilko · 18 Jan 2020 at 22:02

unplug the mollex connector in the centre of the picture put the multi meter props on each of the connectors incoming when trying to charge.

if this connection is loose then it wont charge also if no voltage or current at this point the problem is between here and the wall socket.

when it no plugged in put the multimeter probes on the balck and red spade connectors on each of the black batteries packs

moon man · 18 Jan 2020 at 22:08

joey1211 said:
It's worked for the past 3 years so I'm guessing no.

its me i was doubting i ,iike to totally understand things ,but got an answer .im thinking how does a 7.4 charger charge two 3.7 volt banks that probably need at least 4.2 v each

joey1211 · 19 Jan 2020 at 11:04

These are the reading I get on the multimeter when I place them on the batteries whilst charging

V~ 200 = 3.5
V- 200 = 2

K.C. Leblanc · 19 Jan 2020 at 11:12

joey1211 said:
These are the reading I get on the multimeter when I place them on the batteries whilst charging

V~ 200 = 3.5
V- 200 = 2

That seams very low. Is there a label on the batteries stating their normal Voltage.

If you can get your hands on a suitable car battery charger you could try charging them independently (I'm guessing they're 6 volt). This should give you a good idea if it's the batteries or the charging system.

moon man · 19 Jan 2020 at 11:16

I would be expecting over 6 volts, even if battery's are shot if its on charge, like if you measure across a car battery when running its maybe 14 5 volts.
Have you measured directly from the charger?

joey1211 · 19 Jan 2020 at 11:32

moon man said:
Have you measured directly from the charger?

How would I do this? And could I be eligible for a Darwin Award anytime soon?

moon man · 19 Jan 2020 at 11:38

Probe outside and. Probe inside the. Connector, done it many times

NoobCannon · 19 Jan 2020 at 11:38

I think the outside is the negative and the inside is the positive.

will be very low voltage so no darwin award.

jam the red inside and the black on the outside. Should get 7.5v dc out according to the label

moon man · 19 Jan 2020 at 11:46

if you get zero could also double check your doing it right with another similar connector like a laptop one maybe

joey1211 · 19 Jan 2020 at 12:07

A reading of 2.2 at the 11 o'clock position (V-200)