|
Post by Isambard Kingdom Brunel on May 6, 2020 19:20:41 GMT
What's the difference between a battery and a woman? I know what they have in common..................................................they both charge.
|
|
|
Post by patty on May 7, 2020 9:58:08 GMT
We are not amused....
|
|
|
Post by Isambard Kingdom Brunel on May 7, 2020 10:10:16 GMT
Mea culpa.
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on May 7, 2020 16:30:09 GMT
Anyway I hooked it out and had a look. It has two little holes in it. I believe these are gassing holes. Some new batteries have removeable plugs but as I bought this in an auto factors the plugs had already been removed.
So I guess in ten days water will have got in there.
Might be worth a try on my Ctek 15amp 7 stage (!) Charger. I suppose there is nothing to lose.
I bet it's scrap though.
|
|
|
Post by Jim on May 7, 2020 18:34:18 GMT
Shirley, you should use an SG meter? The old fashioned bulb pipette and float. That would tell you something of the state of the acid. Presuming the battery was topped up to start with, it might have filled up but not by much, like occasionally putting too much water in. It shouldn't have circulated or changed once full. If that makes any sense at all!
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on May 7, 2020 20:26:25 GMT
Shirley, you should use an SG meter? The old fashioned bulb pipette and float. That would tell you something of the state of the acid. Presuming the battery was topped up to start with, it might have filled up but not by much, like occasionally putting too much water in. It shouldn't have circulated or changed once full. If that makes any sense at all! Firstly I don't lower myself to using the pipettes as I have a refractometer. For the undereducated this is an incredibly clever device. It's like a tiny little telescope crossed with a periscope where you drop a bit of liquid on a glass surface and you can view it's specific gravity on a scale. Like the cross hairs of a rifle. Except there are no cross hairs just a vertical scale. It's a lot more professional than using a pipette thing. People with car roof boxes on their boats don't generally know or understand the workings of refractometers. You can google "refraction" or even "refractometer" and find out how incredibly expensive these things are. Mine is a Deutz one. Secondly I don't think I can get any acid out of this particular battery block.
|
|
|
Post by Telemachus on May 8, 2020 8:36:48 GMT
Shirley, you should use an SG meter? The old fashioned bulb pipette and float. That would tell you something of the state of the acid. Presuming the battery was topped up to start with, it might have filled up but not by much, like occasionally putting too much water in. It shouldn't have circulated or changed once full. If that makes any sense at all! I suggest looking up the definition of “Sealed”
|
|
|
Post by Jim on May 8, 2020 8:47:34 GMT
Shirley, you should use an SG meter? The old fashioned bulb pipette and float. That would tell you something of the state of the acid. Presuming the battery was topped up to start with, it might have filled up but not by much, like occasionally putting too much water in. It shouldn't have circulated or changed once full. If that makes any sense at all! I suggest looking up the definition of “Sealed” I know, but once its full it won't then circulate to weaken the acid further, or will it?
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on May 8, 2020 10:43:24 GMT
VRLA seems to be the term. valve regulated lead acid.
I'll have to look that up. It's still sitting outside have not got it onto the charger as cba.
A plus side of losing that battery was that it prompted me to buy a new 36v 15ah Lithium Ion ebike battery. It has the 18650 cells. Seems ok. That has transformed the dinghy somewhat as the electric pod motor is rated to 36v but I always used it on 12v previously.
Dinghy really flies now.
Maybe these Lithium things are the right idea. At least for portable stuff.
|
|
|
Post by lollygagger on May 8, 2020 13:30:14 GMT
But you have measured the voltage?
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on May 8, 2020 14:20:24 GMT
Actually I haven't done that to be fair. Just got it out and lost interest. I'll check it sometime.
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on May 8, 2020 15:18:28 GMT
I don't know ...... but I bet the answer is shocking It is. A battery has a positive side. And brings joy to male boaters at night...
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on May 10, 2020 15:11:53 GMT
But you have measured the voltage? Just managed to be arsed with it and it was 11.8v at rest. Stuck it on my CTEK 200 multistage charger which went onto "recond" mode and voltage went up to 14.6 rapidly. The light on the charger is indicating that battery is almost full. I reckon it's toast. Once charged and rested I will test it with my old Motorola conductance tester which estimates the battery CCA and kilowatt output capability. Label has 380CCA (EN) which can be converted to the other types of CCA quite readily.
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on May 10, 2020 15:44:50 GMT
Just thought worth adding a photo as it is so incredibly interesting. It's the dirtyy looking Oldham one on the left and it says "I told 'em Oldham". Clever marketing. Still on 14.6 which makes me thing it might work. I guess the V in VRLA means Valve which might mean one-way.
|
|
|
Post by lollygagger on May 10, 2020 16:19:31 GMT
It's going to be for over gassing? My bet is on it recovering.
|
|