Restore deep cycle lead acid battery.

Revive dead sulphated RV car marine batteries
I’m gonna do a set of three videos that explain how to take care of this battery it’s got three partially dead cells and three good ones so I’m gonna show you what to do to bring this back to life I’ll do two more videos after this one that will explain more and you’ll see that it is possible to bring these batteries back to life so you can bring them back so that they’re usable again for a good number of years it’s much cheaper than buying a new battery the first thing that you need to do is to clean off all of the top the dirt it’s on top just make sure that you haven’t got anything between the terminals it’s going to be causing the power to leak across them so that’s pretty good so I’ve loosen these caps off we can take a look inside and I think you can see that there is water all of the cells have water because I’ve added water to three of the cells these three cells here the plates were showing I didn’t notice it last summer and I kind of killed my battery so we’ll take a look at the testing to see what we need to do to get this going so the first thing I’m going to do is I’m going to check each one of these cells to see what the voltage is okay cell number one is 2.1 2.1 2.1 that’s cell number three cell number four two point one number five to point one you can see that they’re actually dropping a little bit and then the final cell test to the post one point seven so the worst cell is the last one we’re gonna make these three come back up to meant to equal this one and here we are across the whole battery twelve point nine eight so it’s not terrible but I do have that bad cell and these two weak cells that will be causing the battery to drain faster and when I’m camping I want to make sure that I get all the energy I can at night another thing we’ll do is we’ll use the load tester and see what kind of shape the batteries ran according to it so we’re right here at 12 13 volts just about that’s what we measured and we’ll pull this switch for a count of 10 that’s what the instructions tell us and we’ll see where it comes back to and where it’s sitting so here we go for 10 seconds 4 5 6 7 so let’s come back to about twelve point three volts and if we do it a second time 5 6 7 9 10 you saw that it got down into the yellow week so it’s it’s got some juice but not enough the next thing we need to do is check each cell with the hydrometer and see what kind of reading we get it should be in the middle of the green a good reading is midway in the green section which is about twelve hundred and eighty-five this one’s just holding on to the green again and this one’s about the same it’s actually sitting in the white just a bit we put the covers back on and it’s putting them on loose now I’m going to charge the battery fully on a normal charge and I’m gonna use my charger it’s a 26 amp charger and it has the diesel fading option on it but right now I’m just going to charge it up to 100% then I’ll desulfation so that’ll start up automatically and I’m just gonna let it charge and I’ll come back as soon as this charges up it’s done charging now and you can see it’s come up to thirteen point one thirteen point one three and remove the charger we’re gonna run a 52 watt light bulb which is the old energy savers in Canada through this inverter Twitter watts and there’s the light bulb 52 watts so we’ll begin our test I’ve had a little bit of drainage on it on the top off of the battery so we’re looking at a battery that’s above a hundred percent right now and we’ll start our charge we’ve got the clock at 12 just to see how long it takes for this light bulb to drain the battery down to 60% so we’ve got our amps here our voltage here and we’ll just let it go and I’ll come back later and you’ll see what the clock shows what the voltage is and continue from there as a point of interest you’ll notice that it’s gone to twelve point four two volts and it’s been about seven minutes so the battery has immediately dropped and lost about 20 percent of his charge in seven minutes we’ll continue the test so we’re just an hour and 45 minutes hours and 46 minutes into the test and it’s getting pretty late I’m gonna let it go all night I’m expecting it to go down to probably eleven point nine volts by the morning probably another seven hours away six hours away so we’re still drawing almost five amps 12.30 1 volts so 12.30 1 volts is just about 70% full so we’re doing we’re doing pretty good with it except for the first 20% and that’s what we have to correct so we’ll see you in the morning in five and a half hours now with this light burning at four point eight five amps started it out of about five answer so it’s it’s slowly drawing lessons because the battery has less power and it’s at twelve point O seven volts which is fifty percent so don’t want to take it down too much I don’t want to take it down lower than that let’s turn off the test now and put it on charge so that it comes back all the way up to the top fully recharged and also what once it’s done that we’ll be able to put it on D sulphate for about a day and let that do its under this thing and we’ll do this test all over again and we’ll check it to see what kind of difference we have we’ll take all this off and put it on charge so it’s connected now and beginning his charging phase and we’ll come back in a number of hours when it’s charged back up again the battery has been charging now for about fourteen hours and it’s gone into just about its float mode so I’m going to change this the setting on the charger into the recovery mode which will pulse a higher voltage up in the fifteen volt range and I’ll let that go until it finishes a cycle and you’ll see the voltage change as it kicks on so now it’s in the recovery mode and it’s going to start to D sulfate the plates inside the battery so come and check on it a little bit later this will take about half a day so 12 hours and I’ll come back again