P38A Fixed- Battery going flat again

[Grrrrrr]

Platinum 642X on mine. Must have been on there 8 years by now.

 

[Andy Burrell]

Anyone recommend somewhere I might get the Hankook as they seem to be out of stock.
Tayna batteries where I got the Varta from want me to box it up and send it back to them for testing, not cheap given the weight and some couriers won't even accept it. So the warranty is not worth anything in reality.

 

[kermit_rr]

Anyone recommend somewhere I might get the Hankook as they seem to be out of stock.
Tayna batteries where I got the Varta from want me to box it up and send it back to them for testing, not cheap given the weight and some couriers won't even accept it. So the warranty is not worth anything in reality.

Is that thru the BMS website? They don't seem to carry big stock, seemed to be regularly in and out of stock.. try tomorrow etc

 

[Andy Burrell]

Platinum 642X on mine. Must have been on there 8 years by now.

Wow that's a beast of a battery.

 

[Datatek]

So this morning with my glamorous assistant did the voltage drop test on start.
Before the battery was connected it read 12.57 after four days disconnected. Connected up and neither starter motor or alternator causes the little spark you get when connecting. Something else does but its tiny.
Once connected the volts drop to 12.30 and on start up drops momentarily to 9.4v and then back up to alternator voltage of 14.5v. After that it is sitting at 12.4 v.

So the battery was to all intents and purposes flat when you refitted it. Th battery is fecked.
6 months disconnected and my MF31-1000 was still showing 12.7 volts.

 

[Datatek]

Anyone recommend somewhere I might get the Hankook as they seem to be out of stock.
Tayna batteries where I got the Varta from want me to box it up and send it back to them for testing, not cheap given the weight and some couriers won't even accept it. So the warranty is not worth anything in reality.

Battery Megastore on line

 

[Andy Burrell]

BMS are out of stock but there is Battery Factory.
They have the Hankook
https://batteryfactory.co.uk/produc...rter-battery-12v-ah115-cold-cranking-1000amps
Or push the boat out
https://batteryfactory.co.uk/products/642nx-platinum-xtreme-battery-12v-120ah-cca-1000

 

[kermit_rr]

Write that's a lot more money!!

 

[Grrrrrr]

Write that's a lot more money!!

Lasted a lot longer than the MF31 did. Twice as long so far and still going.

The Platinum one I put on the Jag was second hand from the tip and that's still going 10 years later.

 

[norseman]

Tayna batteries where I got the Varta from want me to box it up and send it back to them for testing, not cheap given the weight and some couriers won't even accept it. So the warranty is not worth anything in reality.

This situation has always concerned me, that's why I buy locally in case of a duff one. The last battery I bought was from ECP, ordered on-line to secure a good discount & collected by myself from the store that's only 5 miles away; that way I can always take it back.

 

[Datatek]

Lasted a lot longer than the MF31 did. Twice as long so far and still going.

The Platinum one I put on the Jag was second hand from the tip and that's still going 10 years later.

My first MF31 lasted 8 years until a duff alternator took it out.

 

[dubbleRR]

I’ve got an Oldham 1000cca and it’s be great longest lasting battery iv had. So far most lasted 2to3years this one’s about 4years now n still going well.had the old girl over 12 years now Just know the battery will fk up now

 

[Grrrrrr]

I’ve got an Oldham 1000cca and it’s be great longest lasting battery iv had. So far most lasted 2to3years this one’s about 4years now n still going well.had the old girl over 12 years now Just know the battery will fk up now

Oldham and Platinum are the same, I think.

 

[kermit_rr]

Oldham and Platinum are the same, I think.

Ones near Manchester, the other is a precious metal

 

[Datatek]

Oldham and Platinum are the same, I think.

Many are from the same production facility just with different branding.

 

[Mark Piercy]

The numax c31-1000 is a similar battery we fitted to a 4.2 SC l322. Same thing different name.

 

[Sonnycbr]

My first MF31 lasted 8 years until a duff alternator took it out.

I've just checked my posts and I bought my Hancook battery 2 and a half years ago. I've kept it maintained all that time and it used to spin the engine over rapidly, I've noticed in the last few weeks that it's just not turning the engine over as well as it used to. Could this be the alternator? I've had problems with the RR batteries since I bought it. Is it an easy job for an auto electrician to test it in situ?

 

[kermit_rr]

Basic test you can do yourself with a very basic volt meter.
Halfords will do a free battery and alternator test with a little machine that clips on to your battery

 

[Mark Piercy]

Could be a lagging starter also.
After swimming and changing the alt and the starter it spins over like a top. In addition to the mf31-1000.

 

[DanClarke]

Could be a lagging sterner also.
After swimming and changing the alt and the starter it spins over like a top. In addition to the mf31-1000.

Yes you will need a much stiffer, sterner, starter that doesn't lag.