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UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: dazmond on December 20, 2017, 06:26:00 pm

Title: decent battery charger with croc clips?
Post by: dazmond on December 20, 2017, 06:26:00 pm
ive been using a halfords  smart battery charger for years but its just not charging these heavy duty numax batteries ive got now.i left it on charge for 14 HOURS last night and it still didnt show a full charge! >:(

so what do you guys use?the batteries are 105ah(2 in tandem but i only need to put croc clips on one of them)
Title: Re: decent battery charger with croc clips?
Post by: CleanClear on December 20, 2017, 06:44:01 pm
the batteries are 105ah(2 in tandem but i only need to put croc clips on one of them)
There's ya problem...... you don't. You need to charge BOTH of them..... or find a charger that can charge a 210 ah battery.
Title: Re: decent battery charger with croc clips?
Post by: P @ F on December 20, 2017, 06:57:09 pm
I was told that you need a charger that is rated for 10 % of the battery capacity , so you will need 2 x 8 or 10 amp chargers or 1 that can do 20 amps if you can get them ?
Title: Re: decent battery charger with croc clips?
Post by: dd on December 20, 2017, 07:03:07 pm
To me that shows that the batteries have been heavily discharged. C-tek chargers are very good.

It is also better to charge the battery slowly as opposed to quickly, they receive more charge this way. If I were you I would charge every night as long as you are using your heater daily.
Title: Re: decent battery charger with croc clips?
Post by: dazmond on December 20, 2017, 07:05:03 pm
the batteries are 105ah(2 in tandem but i only need to put croc clips on one of them)
There's ya problem...... you don't. You need to charge BOTH of them..... or find a charger that can charge a 210 ah battery.

oliver said i only need to put croc clips on one of the batteries and itll charge both of them up.

i thought my halfords charger would do  but its just not charging them up.
Title: Re: decent battery charger with croc clips?
Post by: dazmond on December 20, 2017, 07:10:38 pm
To me that shows that the batteries have been heavily discharged. C-tek chargers are very good.

It is also better to charge the battery slowly as opposed to quickly, they receive more charge this way. If I were you I would charge every night as long as you are using your heater daily.

the batteries havent been heavily discharged at all mate.(reading 12.5)before i put the halford charger on last night.the charger just isnt charging these batteries up quickly enough.on my 75ah battery( that i used to use just for my pump) itd take around 4 hours to show a full charge.

i have a smart b to b split charge relay fitted
Title: Re: decent battery charger with croc clips?
Post by: dazmond on December 20, 2017, 07:12:59 pm
every time i look at the pics of the c tec chargers and numax chargers they dont have a plug on them to plug into your extension lead.i just need one like the halfords one that works! ::)roll
Title: Re: decent battery charger with croc clips?
Post by: Jonny 87 on December 20, 2017, 07:14:18 pm
To me that shows that the batteries have been heavily discharged. C-tek chargers are very good.

It is also better to charge the battery slowly as opposed to quickly, they receive more charge this way. If I were you I would charge every night as long as you are using your heater daily.

the batteries havent been heavily discharged at all mate.(reading 12.5)before i put the halford charger on last night.the charger just isnt charging these batteries up quickly enough.on my 75ah battery( that i used to use just for my pump) itd take around 4 hours to show a full charge.

i have a smart b to b split charge relay fitted

Remember if your taking a voltage test of your batteries just after driving, then it will give a false reading. Batteries need time to “settle” to show their true voltage. You might find after a few hours the true voltage of your batteries could be around the 12 mark, if your getting a reading of 12.5 after turning off the ignition.
Title: Re: decent battery charger with croc clips?
Post by: Jonny 87 on December 20, 2017, 07:15:21 pm
Ctek mxs 7.0.

Will do the job nicely. I wouldn’t go past a ctek.
Title: Re: decent battery charger with croc clips?
Post by: dd on December 20, 2017, 07:15:41 pm
the batteries are 105ah(2 in tandem but i only need to put croc clips on one of them)
There's ya problem...... you don't. You need to charge BOTH of them..... or find a charger that can charge a 210 ah battery.

oliver said i only need to put croc clips on one of the batteries and itll charge both of them up.

i thought my halfords charger would do  but its just not charging them up.
The reason it takes so long is they have been heavily discharged by your heater (ESPECIALLY IF THE FROST STAT KICKS IN A FEW TIMES A NIGHT). It may take 24 hours or so to fully charge them. If you charge them each night it should not take so long subsequently.
Title: Re: decent battery charger with croc clips?
Post by: dd on December 20, 2017, 07:17:05 pm
every time i look at the pics of the c tec chargers and numax chargers they dont have a plug on them to plug into your extension lead.i just need one like the halfords one that works! ::)roll
My c tek has a plug. How else could it work?
Title: Re: decent battery charger with croc clips?
Post by: Jonny 87 on December 20, 2017, 07:22:11 pm
How many hours of driving do you do a day daz?

No matter how good a b2b charger is, I’m
Sure I read somewhere that batteries can only accept about 10amps per hour while under charge.

If anyone knows accurate numbers then please correct me.

So 2 hours driving would put about 20 amps back into your batteries. I’m sure the heaters take up 20 Amps just to start up, so you could easily be depleating your batteries if not charging every night. Unless of course your engine running a lot of the day.

Title: Re: decent battery charger with croc clips?
Post by: CleanClear on December 20, 2017, 07:23:24 pm
the batteries are 105ah(2 in tandem but i only need to put croc clips on one of them)
There's ya problem...... you don't. You need to charge BOTH of them..... or find a charger that can charge a 210 ah battery.

oliver said i only need to put croc clips on one of the batteries and itll charge both of them up.

i thought my halfords charger would do  but its just not charging them up.

Ask him what type charger you will need to do this ? Think about it...... your charger can charge a battery up overnight, but now its got to do two of them in the same time with the same output , hows that gonna happen ?

Easiest solution i can see is buy another charger and charge them seperatley.
Title: Re: decent battery charger with croc clips?
Post by: dazmond on December 20, 2017, 07:27:09 pm
Ctek mxs 7.0.

Will do the job nicely. I wouldn’t go past a ctek.

do you get croc clips and a plug to plug into an extension lead? as all the pics i see is just a little charger and nothing else
Title: Re: decent battery charger with croc clips?
Post by: Jonny 87 on December 20, 2017, 07:28:33 pm
Ctek mxs 7.0.

Will do the job nicely. I wouldn’t go past a ctek.

do you get croc clips and a plug to plug into an extension lead? as all the pics i see is just a little charger and nothing else

Yep, you get everything you need. Corocodile clips, and even a plug to plug into your mains.   ;D

Also you get a quick charging point. I’ll take a pic of mine and post it.
Title: Re: decent battery charger with croc clips?
Post by: dazmond on December 20, 2017, 07:31:16 pm
How many hours of driving do you do a day daz?

No matter how good a b2b charger is, I’m
Sure I read somewhere that batteries can only accept about 10amps per hour while under charge.

If anyone knows accurate numbers then please correct me.

So 2 hours driving would put about 20 amps back into your batteries. I’m sure the heaters take up 20 Amps just to start up, so you could easily be depleating your batteries if not charging every night. Unless of course your engine running a lot of the day.

engine is running for about an hour a day jonny.the thing is the batteries are reading 12.8 on the controller in the morning and 12.5 when ive just finished my last job of the day.

these smart chargers can put 30 amps at a time into the batteries.
Title: Re: decent battery charger with croc clips?
Post by: dazmond on December 20, 2017, 07:34:21 pm
the batteries are 105ah(2 in tandem but i only need to put croc clips on one of them)
There's ya problem...... you don't. You need to charge BOTH of them..... or find a charger that can charge a 210 ah battery.

oliver said i only need to put croc clips on one of the batteries and itll charge both of them up.

i thought my halfords charger would do  but its just not charging them up.

Ask him what type charger you will need to do this ? Think about it...... your charger can charge a battery up overnight, but now its got to do two of them in the same time with the same output , hows that gonna happen ?

Easiest solution i can see is buy another charger and charge them seperatley.

cant be arsed with that.i think ill buy  a  CTEC charger thats rated up to 300ah and stick that on one of the batteries
Title: Re: decent battery charger with croc clips?
Post by: dazmond on December 20, 2017, 07:34:57 pm
Ctek mxs 7.0.

Will do the job nicely. I wouldn’t go past a ctek.

do you get croc clips and a plug to plug into an extension lead? as all the pics i see is just a little charger and nothing else

Yep, you get everything you need. Corocodile clips, and even a plug to plug into your mains.   ;D

Also you get a quick charging point. I’ll take a pic of mine and post it.


cheers jonny
Title: Re: decent battery charger with croc clips?
Post by: Jonny 87 on December 20, 2017, 07:37:23 pm
How many hours of driving do you do a day daz?

No matter how good a b2b charger is, I’m
Sure I read somewhere that batteries can only accept about 10amps per hour while under charge.

If anyone knows accurate numbers then please correct me.

So 2 hours driving would put about 20 amps back into your batteries. I’m sure the heaters take up 20 Amps just to start up, so you could easily be depleating your batteries if not charging every night. Unless of course your engine running a lot of the day.

engine is running for about an hour a day jonny.the thing is the batteries are reading 12.8 on the controller in the morning and 12.5 when ive just finished my last job of the day.

these smart chargers can put 30 amps at a time into the batteries.

That’s a lot more than I thought. Even that though will be 30 Amps per hour. During the day you will be using a lot more than 30 Amps.

Here is the ctek charger......

Inside the black plastic cover is my battery, so with the ctek charger you get a male black/red connection that goes onto the battery, and then you just plug the male end of your charger into
The female port. Saves messing on with crocodile clips.

(http://www.cleanitup.co.uk/smf/1513798556_8C3746A2-FDA9-4D5B-B4E4-6B5E1751D098.jpeg)(http://www.cleanitup.co.uk/smf/1513798556_52B5647A-B45E-48BF-B1D8-1E9E213B636C.jpeg)
Title: Re: decent battery charger with croc clips?
Post by: Jonny 87 on December 20, 2017, 07:41:19 pm
http://www.halfords.com/workshop-tools/garage-equipment/battery-chargers-jump-starters/ctek-mxs7-0-battery-charger


Title: Re: decent battery charger with croc clips?
Post by: dazmond on December 20, 2017, 08:06:00 pm
cheers jonny.ive ordered the CTEK MXS 10 charger from grippa.(it can be used to charge/maintain batteries up to 300ah).my 2 are 210ah altogether.

yours is only rated up to 160ah so i dont think that would charge my 2 batteries up.


cheers anyway fella. ;)
Title: Re: decent battery charger with croc clips?
Post by: Jonny 87 on December 20, 2017, 08:08:18 pm
cheers jonny.ive ordered the CTEK MXS 10 charger from grippa.(it can be used to charge/maintain batteries up to 300ah).my 2 are 210ah altogether.

yours is only rated up to 160ah so i dont think that would charge my 2 batteries up.


cheers anyway fella. ;)

No worries mate. I use the mxs 5, but I recommended you get the 7. That’s good to about 220 Amps I think.

The 10 will be great! Was just trying to save you a few bob.  ;)
Title: Re: decent battery charger with croc clips?
Post by: brianbarber on December 20, 2017, 09:15:18 pm
Don't know what you didn't get this fitted inside your van whilst you were at grippatank.....
Then no poncing about connecting, it's all plumbed in you just plug in the lead from mains
Title: Re: decent battery charger with croc clips?
Post by: CleanClear on December 20, 2017, 09:17:58 pm

cant be arsed with that.i think ill buy  a  CTEC charger thats rated up to 300ah and stick that on one of the batteries
Yep, i'd agree. Funny how you where not told that. If you think saying Grippa are nice guys and have great service then it may fool some people...but not me. You've had a faff because they couldn't sort out your fuel feed and now you can't charge your batteries...... ever get the feeling you where a Guinea Pig ?
Title: Re: decent battery charger with croc clips?
Post by: dazmond on December 20, 2017, 09:39:11 pm
cheers jonny.ive ordered the CTEK MXS 10 charger from grippa.(it can be used to charge/maintain batteries up to 300ah).my 2 are 210ah altogether.

yours is only rated up to 160ah so i dont think that would charge my 2 batteries up.


cheers anyway fella. ;)

No worries mate. I use the mxs 5, but I recommended you get the 7. That’s good to about 220 Amps I think.

The 10 will be great! Was just trying to save you a few bob.  ;)

no its not mate.the 7 is rated to charge batteries up to 160ah.thats why i went for the 10. :)
Title: Re: decent battery charger with croc clips?
Post by: dazmond on December 20, 2017, 09:51:35 pm

cant be arsed with that.i think ill buy  a  CTEC charger thats rated up to 300ah and stick that on one of the batteries
Yep, i'd agree. Funny how you where not told that. If you think saying Grippa are nice guys and have great service then it may fool some people...but not me. You've had a faff because they couldn't sort out your fuel feed and now you can't charge your batteries...... ever get the feeling you where a Guinea Pig ?

the fuel feed was a genuine ford thing not a grippa problem but they wont be testing these heaters out on  vehicles without making sure that they are running properly with the engine off thats for sure! (esp if they live 175 miles away! ;D)from now on.

they ve fitted hundreds of these vans out with diesel heaters over the last few years and never come across this problem.just unlucky i guess.

as for the battery charging.oliver said it might be a good idea to charge them once a week if you dont do much mileage.i thought my halfords one would do it TBH but i was wrong.
Title: Re: decent battery charger with croc clips?
Post by: dazmond on December 20, 2017, 09:55:46 pm
Don't know what you didn't get this fitted inside your van whilst you were at grippatank.....
Then no poncing about connecting, it's all plumbed in you just plug in the lead from mains

it never even crossed my mind mate as ive never had any experience with diesel heaters before
Title: Re: decent battery charger with croc clips?
Post by: Jonny 87 on December 20, 2017, 10:01:12 pm
cheers jonny.ive ordered the CTEK MXS 10 charger from grippa.(it can be used to charge/maintain batteries up to 300ah).my 2 are 210ah altogether.

yours is only rated up to 160ah so i dont think that would charge my 2 batteries up.


cheers anyway fella. ;)

No worries mate. I use the mxs 5, but I recommended you get the 7. That’s good to about 220 Amps I think.

The 10 will be great! Was just trying to save you a few bob.  ;)

no its not mate.the 7 is rated to charge batteries up to 160ah.thats why i went for the 10. :)

Just noticed that actually, but above it on the tech specs says it can maintain charged batteries up to 225amp. Guess it depends what there definition of “charged”.

Either way you are well covered with the 10. Ctek are awesome.
Title: Re: decent battery charger with croc clips?
Post by: dazmond on December 21, 2017, 06:22:00 pm
ive ordered the numax 20A battery charger instead jonny.spoke to grippa today and oliver recommends this one as the ctek charger would take over 20 hours to fully charge two 105ah batteries!the numax one will do it in half the time(10 and a half hours). ;D

happy days ;D
Title: Re: decent battery charger with croc clips?
Post by: P @ F on December 21, 2017, 06:28:37 pm
Did I not say you needed a 20 amp charger posts and posts ago  ::)roll    ;)
Title: Re: decent battery charger with croc clips?
Post by: P @ F on December 21, 2017, 06:31:56 pm
In fact 27 posts ago , but hey , who's counting  ;D ;D ;D
Title: Re: decent battery charger with croc clips?
Post by: The Jester of Wibbly on December 21, 2017, 06:33:20 pm
ive ordered the numax 20A battery charger instead jonny.spoke to grippa today and oliver recommends this one as the ctek charger would take over 20 hours to fully charge two 105ah batteries!the numax one will do it in half the time(10 and a half hours). ;D

happy days ;D


Got a link bud?
Title: Re: decent battery charger with croc clips?
Post by: P @ F on December 21, 2017, 06:40:20 pm
ive ordered the numax 20A battery charger instead jonny.spoke to grippa today and oliver recommends this one as the ctek charger would take over 20 hours to fully charge two 105ah batteries!the numax one will do it in half the time(10 and a half hours). ;D

happy days ;D

 ??? ??? ??? , But if he knew that , why did he not tell you you didnt have a hope in hell with what you originally had to charge with ?
Title: Re: decent battery charger with croc clips?
Post by: P @ F on December 21, 2017, 06:44:03 pm
You could have goosed 2 decent batteries there Daz , should Oliver not be making purchasers aware that this has to be a purchase to go with the supplied package as standard practice ?
Title: Re: decent battery charger with croc clips?
Post by: dazmond on December 21, 2017, 09:56:00 pm
ive ordered the numax 20A battery charger instead jonny.spoke to grippa today and oliver recommends this one as the ctek charger would take over 20 hours to fully charge two 105ah batteries!the numax one will do it in half the time(10 and a half hours). ;D

happy days ;D


Got a link bud?

its on the grippatank website mate.it even says "recommended for our hot systems".i just missed it! ::)roll ;D
Title: Re: decent battery charger with croc clips?
Post by: dazmond on December 21, 2017, 09:57:53 pm
Did I not say you needed a 20 amp charger posts and posts ago  ::)roll    ;)

sorry rich i must of missed that post for some reason
Title: Re: decent battery charger with croc clips?
Post by: dazmond on December 21, 2017, 10:02:12 pm
You could have goosed 2 decent batteries there Daz , should Oliver not be making purchasers aware that this has to be a purchase to go with the supplied package as standard practice ?

i think it should be part of the package with the money they charge for the hot systems.retro fit or not.
Title: Re: decent battery charger with croc clips?
Post by: The Jester of Wibbly on December 21, 2017, 10:17:11 pm
You could have goosed 2 decent batteries there Daz , should Oliver not be making purchasers aware that this has to be a purchase to go with the supplied package as standard practice ?

i think it should be part of the package with the money they charge for the hot systems.retro fit or not.


Thanks.  Looks like the charges have changed on their website since I last looked.

I was told after I had battery concerns that I might need to upgrade my installed charger for it to fully charge over night.   Shame this was mentioned after the install as I probably would have added it to the order.
Title: Re: decent battery charger with croc clips?
Post by: dazmond on December 21, 2017, 10:23:45 pm
You could have goosed 2 decent batteries there Daz , should Oliver not be making purchasers aware that this has to be a purchase to go with the supplied package as standard practice ?

i think it should be part of the package with the money they charge for the hot systems.retro fit or not.


Thanks.  Looks like the charges have changed on their website since I last looked.

I was told after I had battery concerns that I might need to upgrade my installed charger for it to fully charge over night.   Shame this was mentioned after the install as I probably would have added it to the order.

they ve now took down the ctek charger from their website  i had originally ordered yesterday.just the numax ones on their site now(one for cold and one for hot)10amp and 20amp respectively.