can this somehow determine the life of a battery bank, or will it only do it accurately with one battery
47405
It is not for battery bank use, but checking the start-up typed battery. FYR.
2042131
Sorry but I never "tested" it without batteries. The display shows both readings which stay lit for a few seconds-I would think battery drain is minimal.
1540338
Sorry, have no experience with that. All I know is that I installed it and it is still working. For the price paid I think it is probably worth the risk, considering that one battery in the store costs as much as the multi pack you get thru this site.
1882110
That's why I bought one. I use it to check my batteries in my solar system. Works great. You need to disconnect each battery and check them individually.
2111330
M_ENGLE and DUSTY comments contradicts what Bob commented...I want to use this device for load testing and confirm the condition of any battery......who am i to be believe now, because am about to place order.
503925
I have not timed it, but I have not had my battery run out on me yet. Unless you have a great price on a second battery, why not give it a try with just the one and see if you in fact do not need the second.
930332
it can measure mA to see if you have a car battery drain.. I believe it can read mV as it goes several decimal places when evaluation AA and AAA batteries
1307215
This is not true. For me, it works perfectly, and seems to accurately reflect the remaining charge.To be careful, I took care when conditioning the battery to the phone: I turned off the phone, put in the new battery, and charged it until the LED indicator was green. I then turned it back on. I think (but could be completely wrong) that leaving the phone on while doing this initial charge is what is causing inaccurate charge meters. I left it on until it was at 10%, then I plugged it back in until it was at 100% again.
617222
Yes, it'll read current no matter what's generating it. But what you really need is to put a load on the battery and see how long they last. You can calculate how much power they deliver.
2202953
No you will have to purchase one other battery to go with the one battery for it to operate
1576673
yes. I think so. I tried all the settings and it reads the same amps at all settings. tho I only tested 1 battery so far.
1289944
We generally just use multimeters and/or Hydrometers to check batteries, I don't think this has that capability.It's great for charging though.
611639
i dont know.just hook an ammeter in series with it and a battery and you'll find out
1146454
It's not recommended as the charge and discharge rates are different for the two batteries. It's best to use two batteries of the same capacity.
340680
if you hook the batteries together pos to pos and negative to negative and then hook your charger to one of them the charger will recognize the batteries as one battery but both batteries have to be the exact same size and age.
1764360
Well, I don't know, but it seems to me like the problem is the opposite. I.e. it turns itself off when one battery is charged, but there are three that are not.
323793
I feel that the tester is quite accurate. If it is failing the battery, the battery is definitely junk. Sometimes it will pass a battery and the battery will start the car fine and is able to put out good cranking amps for a short time but then the battery may not have very good reserve capacity such as if the customer leaves their key on for a half hour the battery may die quicker than it should. But the age on the battery is a pretty good indicator for this sort of battery deterioration. It's a simple tester that works better than 2 others I have tried.