Battery Charger / Maintenance
Battery Charger / Maintenance
Author
Discussion

Fairynuff

Original Poster:

17 posts

85 months

Friday 27th March 2020
quotequote all
I've got two cars sat on the driveway going nowhere and (call me a pessimist) I expect they are going to be there for at least 3 months. Do I need to look further than the below or is that just what I need?

CTEK MXS 5.0 Fully Automatic Battery Charger (Charges, Maintains and Reconditions Car Batteries) 12V, 5 Amp - UK Plug

bqf

2,290 posts

201 months

Friday 27th March 2020
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I have 10 battery chargers. (Don't ask). Ctek are excellent, but dear.

Aldi are doing £12.99 battery chargers at the moment, online + delivery. They're actually very good, and do all the revive tricks a CTEK does.

I'd buy 2 of those

V8RX7

28,982 posts

293 months

Friday 27th March 2020
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You could just start them once a week etc

But I have that Ctek and it is excellent - arguably massively OTT for your needs but it will revive a dead battery that most will not, hence paying for itself.

EDIT - the Aldi / Lidl ones are NOT the same, by any stretch (I have both) but they would do your needs (but won't revive a dead battery)

shtu

4,596 posts

176 months

Friday 27th March 2020
quotequote all
bqf said:
Aldi are doing £12.99 battery chargers at the moment, online + delivery. They're actually very good, and do all the revive tricks a CTEK does.

I'd buy 2 of those
The Lidl\Aldi chargers are excellent value. I have one (Lidl iirc) and it's done a fine charging job. At under £15 with a 3 year warranty, you can't really fault them.

Want to get all fancy with Special Charging Cables Like What CTEK Do? A few bits of wire and some crimp terminals does the same job for pennies.

Lotobear

9,187 posts

158 months

Friday 27th March 2020
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I have 1 Ctek and 3 Aldi chargers.

My Ctek would not review a flat battery but the Aldi version will - go figure.

FWIW I consider the Aldi ones to be much better - the Cteks are something of an emperors new clothes IMHO and will almost certainly contain the same Chinese parts as the Aldi ones.

The fittings (cables and croc clips) and much more robust on the Aldi ones too - they are a genuine bargain if you just want something to do the job and they come with a 3 year guarantee to boot

V8RX7

28,982 posts

293 months

Friday 27th March 2020
quotequote all
Lotobear said:
I have 1 Ctek and 3 Aldi chargers.

My Ctek would not review a flat battery but the Aldi version will - go figure.

FWIW I consider the Aldi ones to be much better - the Cteks are something of an emperors new clothes IMHO and will almost certainly contain the same Chinese parts as the Aldi ones.

The fittings (cables and croc clips) and much more robust on the Aldi ones too - they are a genuine bargain if you just want something to do the job and they come with a 3 year guarantee to boot
I have 2 Aldi, 1 lidl and the 5amp CTEK - it is the only one that will charge a battery that drops below 12v

It will charge batteries much higher than the others too (I have a drop tester)

If you just need a floating charge the cheap ones are ok, if you have cars that you've let go flat the CTEK (at least my one) will revive it.


Lotobear

9,187 posts

158 months

Friday 27th March 2020
quotequote all
V8RX7 said:
I have 2 Aldi, 1 lidl and the 5amp CTEK - it is the only one that will charge a battery that drops below 12v

It will charge batteries much higher than the others too (I have a drop tester)

If you just need a floating charge the cheap ones are ok, if you have cars that you've let go flat the CTEK (at least my one) will revive it.
Yet, I managed to recover a 'dead' battery showing 6.9v with my £12.99 Aldi one. My Ctek is only the £60 version but it would not do what the £12.99 Aldi one managed to achieve, but perhaps it depends on the battery type?

I have another Ctek on the Evora and it works fine as a trickle charger but I've never had to use it on a dead battery. I know there are several levels and price points with Ctek so perhaps it's only the expensive ones that will do a recovery but I know that the Aldi one did what was not possible with my £60 Ctek unit.


Evercross

6,883 posts

94 months

Friday 27th March 2020
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V8RX7 said:
But I have that Ctek and it is excellent - arguably massively OTT for your needs but it will revive a dead battery that most will not, hence paying for itself.

EDIT - the Aldi / Lidl ones are NOT the same, by any stretch (I have both) but they would do your needs (but won't revive a dead battery)
You are right - they are not the same but there is practically no difference between the Aldi/Lidl ones and CTek older/base model chargers because they are built from the same designs and operate on the same basis. There might be some corners cut in terms of build quality but when you can buy three Aldi ones for the cost of a CTek they become disposable.

I have an older Aldi type (with no digital display, just LEDs) and a newer Lidl with with the black on blue digital display. The old Aldi one has succeeded in reviving a fully discharge battery but the digital Lidle one won't.

I also built a desulphater and left it connected along with the Aldi charger to a stone-dead BMW battery. Left it for a month and then put it in a car - the battery was still charging and starting 2 years later!

TimmyMallett

3,198 posts

142 months

Friday 27th March 2020
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Get a ctek, and 2 convenience connectors. You can then swap them in between without faffing about with crox clips.

p4cks

7,522 posts

229 months

Friday 27th March 2020
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TimmyMallett said:
Get a ctek, and 2 convenience connectors. You can then swap them in between without faffing about with crox clips.
Aye this was the only reason I got rid of my Lidl version - the battery was a bd to access so I ended up paying for a CTEK with the convenience connectors hard wired to the battery and run up to somewhere which was more accessible.

The Lidl/Aldi ones were/are perfectly adequate, just not an ideal solution for me.

untakenname

5,367 posts

222 months

Friday 27th March 2020
quotequote all
Now it's getting to the time of year where the suns higher in the sky a cheap 20w solar charger can be useful as will keep the battery topped up as long as it's getting 4+ hours of daylight.

I don't like the concept of leaving a car on charge 24/7 as I've had issues with garaging cars over winter on a maintainer and then finding the battery is dead anyway, I was using a cheap charger and now have a more expensive one but imo it's better to leave a battery and then periodically charge it rather than leaving it at full float charge 24/7.

I've got a cheap bluetooth monitor attached to one of my weekend cars batteries and it will push an alert to the phone when I'm in range if it's running low



If you have an RC battery charger already in the house than that will work as well, I sometimes charge a car periodically that's nowhere near a power outlet using a 5000mah RC car battery after looking on the settings on my charger and seeing it would charge Pb (lead) batteries as well as lithium ones.



p4cks

7,522 posts

229 months

Friday 27th March 2020
quotequote all
untakenname said:
I don't like the concept of leaving a car on charge 24/7 as I've had issues with garaging cars over winter on a maintainer and then finding the battery is dead anyway, I was using a cheap charger and now have a more expensive one but imo it's better to leave a battery and then periodically charge it rather than leaving it at full float charge 24/7.
There's a difference between a battery conditioner and a battery charger though; you certainly shouldn't leave a battery charger connected 24/7 as it will fk the battery.

A conditioner works as a top up, rather than a charger in itself.

Krikkit

27,938 posts

211 months

Friday 27th March 2020
quotequote all
p4cks said:
TimmyMallett said:
Get a ctek, and 2 convenience connectors. You can then swap them in between without faffing about with crox clips.
Aye this was the only reason I got rid of my Lidl version - the battery was a bd to access so I ended up paying for a CTEK with the convenience connectors hard wired to the battery and run up to somewhere which was more accessible.

The Lidl/Aldi ones were/are perfectly adequate, just not an ideal solution for me.
Me too - I have one for my bike and it's great to be able to just disconnect it from a simple connector in a second... If you have a car which has an awkward battery access they're vital.

p4cks

7,522 posts

229 months

Friday 27th March 2020
quotequote all
Krikkit said:
Me too - I have one for my bike and it's great to be able to just disconnect it from a simple connector in a second... If you have a car which has an awkward battery access they're vital.
I really had no choice, the battery in the Clio is under a large piece of plastic trim and I certainly wasn't willing to fanny on with it so I ended up drilling a hole and feeding the convenience cable up. It's been an absolute godsend.


Lotobear

9,187 posts

158 months

Friday 27th March 2020
quotequote all
Krikkit said:
Me too - I have one for my bike and it's great to be able to just disconnect it from a simple connector in a second... If you have a car which has an awkward battery access they're vital.
.......it's a very simple and cheap matter to make up a fly lead and 'quick' connector for the Aldi version.


Julian Thompson

2,717 posts

268 months

Friday 27th March 2020
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The Bassface BFM.1 is £25 and has all the clever stuff plus a 10 meter power cable so no messing about with extension leads. I have a few of them and they’re great.

untakenname

5,367 posts

222 months

Friday 27th March 2020
quotequote all


p4cks said:
There's a difference between a battery conditioner and a battery charger though; you certainly shouldn't leave a battery charger connected 24/7 as it will fk the battery.

A conditioner works as a top up, rather than a charger in itself.
It was a decent (expensive) Tronic charger back in the day and had maintenance/winter mode but it seemed to offgas so when it was time to use the car in spring it was found that the electrolyte levels had dropped, this happened two years in a row with different batteries.

Unless you've got major parasitic drain then a fully charged battery should last a few weeks before needing charging, imo charging sporadically for a couple of hours every couple of weeks is better on the car battery than leaving it at a constant float charge.

Edited by untakenname on Friday 27th March 12:48

RizzoTheRat

29,027 posts

222 months

Friday 27th March 2020
quotequote all
Simple option is just to disconnect the battery for a while but I guess these days that probably plays havoc will all sorts of systems.

My car regularly sits unused for a couple of months or more so I bought a solar charger. Not sure what power it is but it sits on the dash and connects though the ODBC port.

I have an Optimate for the bike, which sadly died recently after many years of abuse. I see lots of people here mentioning the CTEK ones, anyone know if they're better or worse than the Optimate?

Europa1

10,923 posts

218 months

Friday 27th March 2020
quotequote all
I don't have a charger, and as I'm locked down due to being "at risk/vulnerable", I'm trying to keep deliveries to a minimum, so don't want to order one either.

That being the case, how long do I need to run the car for (stationary on the drive) to charge up the battery, and how often should I do it?

CABC

6,305 posts

131 months

Friday 27th March 2020
quotequote all
i have several Optimates and an AA one (£25 simple piece).
had a ctek until it failed...

nice thing about the Optimates is that they restart themselves after a power of if you have it on timer. the AA one doesn't, and nor did the ctek iirc.

i put mine on a timer for overall piece of mind (i'm fully aware of maintenance mode btw)