Charge and Maintain

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nea100
C Class
Posts: 49
Joined: Wed 09 Dec, 2009 5:16 pm
Model you own: w123
Location: Mackay Qld

Charge and Maintain

Post by nea100 » Mon 12 Sep, 2016 12:11 pm

Hi,

Looking at getting a charge and maintain type charger to help keep the battery up on a W140.

Does anyone have any recommendations, was thinking of just a commonly available "Projecta" brand.

Are there any precautions I should take in leaving one connected, or could these do any damage to the W140 electronics?

Many thanks,
Col.
1984 300D - Gold, Gold, Gold
1984 280CE - Silver Blue - Undergoing minor restoration
1970 Valiant VG VIP - White - Distant relative

redlaser
Finnie
Posts: 294
Joined: Tue 02 Jun, 2009 5:38 pm
Model you own: w126
Location: Narre warren Melbourne

Re: Charge and Maintain

Post by redlaser » Thu 15 Sep, 2016 9:29 am

I use a Projecta but I find that if the battery is below say, 11.5 volts the Projecta will take forever to charge the battery as it is a "trickle" charger only...so if your battery is older than 4 yerars old or you use the car not very often then OK to trickle charge...to permanently leave connected will do no harm to electronics unless you get a power surge on the mains!!!...the "projecta" is meant for weeks of unattended operation of a car battery.

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pastelgrey300D
OZBENZ Admin
Posts: 3553
Joined: Wed 07 Feb, 2007 9:17 am
Model you own: w111
Location: Adelaide

Re: Charge and Maintain

Post by pastelgrey300D » Thu 15 Sep, 2016 12:22 pm

Highly recommend Jaycar for anything like this:

http://www.jaycar.com.au/12v-5-stage-ca ... d/p/MB3604

I also have one of their 15 amp chargers, best battery charger I've ever had. No problem charging large batteries from diesels etc. Rather than having a trickle charger I just hook this up to each car once a week on the lowest (2 amp) setting and let it charge overnight. If you keep an eye out I've seen them on sale at Jaycar for $99 every now and then.
http://www.jaycar.com.au/intelligent-6v ... r/p/MB3623

Since buying mine, I've noticed they have brought out a new model which combines the two - maybe this would be the best 'all-rounder': http://www.jaycar.com.au/12v-10a-intell ... r/p/MB3625
David
1967 W111 230S - Horizonblau
1965 W110 190c - Mittelrot
1967 W110 200D - Weiss (work in progress)
+ other classics

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Tony From West Oz
OZBENZ moderator
Posts: 3202
Joined: Mon 20 Jun, 2005 10:04 pm
Model you own: w202
Location: Bedfordale WA

Re: Charge and Maintain

Post by Tony From West Oz » Thu 15 Sep, 2016 5:15 pm

pastelgrey300D wrote:Highly recommend Jaycar for anything like this:

http://www.jaycar.com.au/12v-5-stage-ca ... d/p/MB3604
I have a similar one - mine is 8A IIRC.
I also have one of their 15 amp chargers, best battery charger I've ever had. No problem charging large batteries from diesels etc. Rather than having a trickle charger I just hook this up to each car once a week on the lowest (2 amp) setting and let it charge overnight. If you keep an eye out I've seen them on sale at Jaycar for $99 every now and then.
http://www.jaycar.com.au/intelligent-6v ... r/p/MB3623
Mine of that model died after 3 years. I plugged it in, it went "CRACK" and the magic smoke leaked out of it. It didn't work anymore after that.

Since buying mine, I've noticed they have brought out a new model which combines the two - maybe this would be the best 'all-rounder': http://www.jaycar.com.au/12v-10a-intell ... r/p/MB3625
Tony
Life is a journey, with problems to solve, lessons to learn, but most of all, experiences to enjoy.

'83 W123 300D 325000km (Wife's car Josephine - sold).
'84 W123 300D replaced good OM617 912 with OM617 952 and enjoyed having good acceleration for the first time since first driving a 300D in 2002 - became engine and trans donor for 300CD Turbodiesel conversion. Now parted out.
'86 W124 300D sold (Wife's old car - sold )
'85 W123 300CD, 275 000km (Fatmobile) rebuilt turbodiesel from previous Fatmobile transplanted into 280CE (SOLD)
'99 W202 C250 Turbodiesel (my darling Wife's car - Sold)
'98 W202 C250 Turbodiesel (my car - Sold)
'06 Ssanyong Musso Crew Cab 2WD Ute (OM662 diesel and Auto Transmission)

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Ivanerrol
Mercedes Demigod
Posts: 5782
Joined: Sat 12 May, 2007 3:21 pm
Model you own: w204
Location: Melbourne

Re: Charge and Maintain

Post by Ivanerrol » Thu 15 Sep, 2016 8:24 pm

You can buy solar panel trickle chargers with regulators.
Just leave them on all the time.

A regulated power supply will only provide trickle or charging current when the battery needs it.

If your battery gets down to 11.5 volts then its had it.
W211 - E240
W204 - C280
Departed
W202 - C200, C180, C180
W126 - 380SE , 380SE (Ex SA Import), 560SEL
W124 - 300e, 260e (ex Japan)
W111 220s (Indonesia) 4 speed manual column shift
W123 230
W116 450SEL
W140 420SEL
W210 E240, E240
W209 CLK 240
W201 190e 2.6 (ex U.K.)

nea100
C Class
Posts: 49
Joined: Wed 09 Dec, 2009 5:16 pm
Model you own: w123
Location: Mackay Qld

Re: Charge and Maintain

Post by nea100 » Sat 17 Sep, 2016 11:57 am

Thanks for the replies guys. Never thought of Jaycar products David.

The solar option sounds worth looking into, great idea.

Something to help prevent having to reset stuff on an infrequently used car.

Thanks again,
Col.
1984 300D - Gold, Gold, Gold
1984 280CE - Silver Blue - Undergoing minor restoration
1970 Valiant VG VIP - White - Distant relative

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Ivanerrol
Mercedes Demigod
Posts: 5782
Joined: Sat 12 May, 2007 3:21 pm
Model you own: w204
Location: Melbourne

Re: Charge and Maintain

Post by Ivanerrol » Sun 18 Sep, 2016 10:42 am

Here's something for all of $27.50.

Comes with a regulator
http://www.ebay.com.au/itm/10W-12V-Tric ... Sw~gRV0WnJ
W211 - E240
W204 - C280
Departed
W202 - C200, C180, C180
W126 - 380SE , 380SE (Ex SA Import), 560SEL
W124 - 300e, 260e (ex Japan)
W111 220s (Indonesia) 4 speed manual column shift
W123 230
W116 450SEL
W140 420SEL
W210 E240, E240
W209 CLK 240
W201 190e 2.6 (ex U.K.)

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