Dead battery not jump-starting

[Texxaco]

afternoon All,

How do you use the GB40 on a dead battery? I have attached the positive lead to the battery positive and the negative lead to the van hinge bolt. The device says it’s good to go but I can’t get the van to turn over let alone start.

Battery is showing as 11 V at the terminals.

Have I missed anything as I am no sparky.

 

[Kind of Blue]

I have been looking for the instructions for my CB70. I have never used it. It just languishing in its bag I know enough not to put my lips around it and shout stat. I will have to look it up on line.

 

[JOG]

Hiya

Does a GB40 have enough oomph? Once you've cranked the engine a couple of time, it fades? I'd be more concerned that you're showing 11V on the battery but it's doing nothing.

Regards,

JOG

 

[Kind of Blue]

Here You go! Noco Gb40 Review | Jump Starters Guide

 

[Texxaco]

I just tested the battery at the terminals again and it states 9.48V unless i am doing something very wrong.

 

[Kind of Blue]

I am the wrong guy to be answering anything T6electrotechnical. I understand, (eventually) the bit about charging and conecting to an earth other than direct battery. I am unsure if that is still that same advice for jump-starting!

 

[Texxaco]

Me neither, i really need a Sparky on this thread, The battery is an AGM but not a MOLL one which i have read had issues and were replaced.

Anyone help me with my issue please?

 

[sparkzer]

i know nothing about this specific charger however a lot of 'smart' chargers don't like to begin charging a flat battery..The quick trick i've always done is when the charger is connected up, connect also jump leads to another (charged) battery or one of those starter packs. whilst connected, your battery volts will jump up to an acceptable level which allows the charger to begin charging. The jumping device can be immediately removed and the battery can be left to charge.

Edit - just re-read, ignore me...you were talking about a jump starter pack, not a battery charger - serves me right for skim reading!

 

[Kind of Blue]

I think that you may have a little bit of a wait, everyone is a bit high on laughing gas reading about Queens English. They are all a bit silly now.

 

[Kind of Blue]

Are you desperit as in need it now? Are you trying to get home perhaps?

 

[Pete C]

The manual tells you what to do and what to expect.
Basically connect the leads, then press the on button. The LEDs will illuminate in turn. Start the van.

Pete

 

[Texxaco]

Thanks Pete, am i connecting both of the leads to the battery? I though i read that the negative had to be connected to an earth on the van?

 

[Pete C]

But a GB40 may not be man enough for a T6 - it depends how flat your battery is.

Pete

 

[JOG]

Thanks Pete, am i connecting both of the leads to the battery? I though i read that the negative had to be connected to an earth on the van?

no, whack both leads on the battery. Only issue now is whether the charger has enough left in it

 

[Pete C]

What JOG said is correct

Pete

 

[Pete C]

 

[Texxaco]

So after all that and reading every thing i could on the AGM battery and the shunt i now see that you put both of the charge leads on the battery and off you go?

The smart charger is now back on charge however when i did try to turn over the engine it did turnover just didnt fire up.

Jeez I still have a lot to learn at nearly 50

 

[Texxaco]

View attachment 90636

Bloody hell you got more of a manual than I did. I got three pages of a book that was an inch thick.

Cheers @Pete C

 

[Pete C]

For jump starting you always connect direct to battery terminals - gives the best connection.

Pete

 

[Texxaco]

So long as someone learns from my mistake, jobs a good un.