Refueler
Well-Known Member
I have two 'Lawn Mowers' that have 4 stroke engines (13 and 17HP) with alternators ....
Usually called Lawn Tractors .... or Front Riders is the other sort.
battery charging - mower
- Thread starter simonfraser
- Start date
I have two 'Lawn Mowers' that have 4 stroke engines (13 and 17HP) with alternators ....
Usually called Lawn Tractors .... or Front Riders is the other sort.
Seastoke
Well-Known Member
Kawasaki is a back rider
Kawasaki
Well-Known Member
Incorrect
‘Free rider’!
Seastoke
Well-Known Member
I would say is battery is terminal.
Seastoke
Well-Known Member
Turn the turf over , the grass is always greener on the other side
Seastoke
Well-Known Member
Teslar make a electric mower but you have to go service station to charge it up
Refueler
Well-Known Member
I'm sure there are other ma,es as well ...
longjohnsilver
Well-Known Member
The acid test is looking positive.
Kawasaki
Well-Known Member
?
‘Missed’ that initially!
gordmac
Well-Known Member
It would be a shame to buy a new battery then ruin it because the alternator is faulty.
Paulg25
Well-Known Member
If you have jump leads connect your car battery to it. See what you get then.
Refueler
Well-Known Member
That should have read 'names' or 'makes' .... fat fingers and crappy keyboard.
Refueler
Well-Known Member
The question is .... does the mower work with that battery ?
I know the numbers are a bit iffy ... but OP never really gave much more info.
I know the numbers are a bit iffy ... but OP never really gave much more info.
Paulg25
Well-Known Member
Thats' a good point. I assumed there was an issue with starting or something. Perhaps he decided to check voltages because he was bored. You never know.
PS. Should I be using 'they' instead of 'he' just in case I offend!!
Refueler
Well-Known Member
Thats' a good point. I assumed there was an issue with starting or something. Perhaps he decided to check voltages because he was bored. You never know.
PS. Should I be using 'they' instead of 'he' just in case I offend!!
I don't like the 14.5V battery reading .... but if its measured while charging - it could show this. But once stopped and minute later would show more sensible figure.
The 18.5V alternator ? Not sure but maybe as another says - that's no load output ?
I have a battery / alternator tester - but it puts a significant load on to give me a reading ... so that does not help with those numbers.
Kawasaki
Well-Known Member
Gathered that but what threw me was 'maes'
Without the comma, can mean grass or field or park in Welsh!!
Plus without looking properly I thought it was Seastoke who posted
Now He cant spell in any language
Plus He's from Stoke, so communication is always a little fraught!
simonfraser
Well-Known Member
14.5 just after the mower switched off
18.5 with the motor on
yes it does start with the battery recently charged up
if i leave it on charge for a long time = weeks, it does not start
that is a new charger, same with the old one
total mystery to me
have not measured the charging voltage of the mower in the past as i assumed - always bad - that this was not going to be an issue, mainly as it does not run for long, so how much damage can it do ......
so perhaps the 18.5 whilst running damages the battery ?
Refueler
Well-Known Member
What do you get after its rested for a bit ? My mower batterys both read about 13+V full charged.
I checked mine and alternator voltage going to battery is ~15.5V ..... at high speed ... drops back to about 14.8V at mowing speed.
ok
if i leave it on charge for a long time = weeks, it does not start
that is a new charger, same with the old one
total mystery to me
Are you using smart charger or basic non auto charger ? typical mower battery is only about 18 - 20A/hr so should never need long on a charger, even a low rate 4A charger. Mine even when handyman forgets to check and I find them low - only take half day or so to charge up again at 4A setting.
Easy enough to remove alternator and take to auto electrics guy to check it out. That way you are sure.
Paulg25
Well-Known Member
Still sounds like battery. If fully charged it should read 12.7v a few hours after you take the charger off. How old is the battery?
