Battery charging with Ctek & Honda

Submitted: Sunday, Mar 22, 2009 at 20:16
ThreadID: 67085 Views:2455 Replies:7 FollowUps:3
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Have found a Ctek 7amp charger at a very reasonable price which would suit our needs most of the time on our 220 amp wet d/cycle batts,for maintenace at home & occasional 240v camp sites on the C/T. (Trailblaza & lights)

Mostly we charge whilst away via 80w solar panel.....

My question is on the rare occasion that the sun gods don't play the game after a few day's, is it possible/ADVISABLE to use the CTEK and at the same time the 12v charging (? 8amps) circut from the EM650 Honda genny to minimize the time running the genny.

Thanks for your opinions


Chris
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Reply By: Member - Graham H (QLD) - Sunday, Mar 22, 2009 at 20:35

Sunday, Mar 22, 2009 at 20:35
Cant advise either way but it has been mentioned on here that you should not charge direct from gennie.
Rather just use the Ctek
Whats a good price Mine was $175 S/hand but unused
AnswerID: 355513

Follow Up By: 3F62 - Sunday, Mar 22, 2009 at 21:25

Sunday, Mar 22, 2009 at 21:25
$195......delivered.

Tks for reply
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FollowupID: 623573

Reply By: Tenpounder - Sunday, Mar 22, 2009 at 20:49

Sunday, Mar 22, 2009 at 20:49
Hi there.
My answer is a BIG NO!!
I have a Yamaha 1000w genny, and the instructions are clear - use EITHER the 12v output OR the 240v.
But, more to the point, why bother with a quality CTek charger, and then connect an unregulated 12v supply in parallel. It's like mixing Grange Hermitage with Cask Red, and expecting a quality red as the result!
The charge rate of the Ctek is a deliberate thing, designed to suit the battery. The 12v output of the genny is not.
Chris (SA)
AnswerID: 355517

Follow Up By: 3F62 - Sunday, Mar 22, 2009 at 21:27

Sunday, Mar 22, 2009 at 21:27
That's what i needed to here.....

tks for the reply

Chris
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FollowupID: 623574

Reply By: ABR - SIDEWINDER - Sunday, Mar 22, 2009 at 21:31

Sunday, Mar 22, 2009 at 21:31
I would use a 20A charger for 220 a/h and only use the charger and not the 12V DC out on the generator.

Regards

Derek
AnswerID: 355537

Reply By: Lex M (Brisbane) - Sunday, Mar 22, 2009 at 21:34

Sunday, Mar 22, 2009 at 21:34
As they said but a 7amp charger is going to take a long time to charge 220AH.
AnswerID: 355538

Follow Up By: Lex M (Brisbane) - Sunday, Mar 22, 2009 at 21:36

Sunday, Mar 22, 2009 at 21:36
But not as long as a 80W solar panel.
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FollowupID: 623577

Reply By: 3F62 - Sunday, Mar 22, 2009 at 23:03

Sunday, Mar 22, 2009 at 23:03
Thanks for replies......agreed 80w is border line,but you make do with what you have, however panel not fixed & moved as required and we don't camp much past Brisbane in cooler months for less than a week at a time ATM (mmm work)......Trailblaza is pretty efficient.

Cheers
AnswerID: 355558

Reply By: Member - Mike DID - Monday, Mar 23, 2009 at 08:26

Monday, Mar 23, 2009 at 08:26
A CTEK charger is overkill if you're only going to use to use it occasionally.

For the same money, you could get an excellent 3-stage charger with much higher output.

The "DC" output from any of these small generators is just raw rectified AC with NO charge control. You risk destroying your battery from overcharging and the AC component in the output would confuse any charger connected in parallel.
AnswerID: 355585

Reply By: Axel [ the real one ] - Monday, Mar 23, 2009 at 10:15

Monday, Mar 23, 2009 at 10:15
If you have not already bought the 7amp you would be better off looking into the 15amp , do the recharge in half the time , the 7 will do the job but remember that the fridge + lights are drawing power at the same time you are trying to replace so the 7 in effect is really 4 or 5 amps per hr , long time to replace 100 odd if you discharge to the 50%.
AnswerID: 355606

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