When is your Power Tank fully charged?

[lukebl]

Hi,

I have a Skywatcher Power tank, which seems to work fine.

However, the 'Fully Charged' light NEVER comes on, even if the thing has been charging for days.

Is there a fault? As I say, it works fine and only once got low on power after several hours of heavy use with the HEQ5 mount.

Cheers,

Luke

[keithatrochdale]

How old is it?

Has it had much use?

Is it often left unused for ages?

[dark knight]

Funnily enough my power tank has the same problem, I left mine charging for a week and the fully charged light never came on, I really don't have much faith in it now. Maybe just use it for dew bands....

[lukebl]

How old is it?

Has it had much use?

Is it often left unused for ages?

It's only about a year old. It gets as much use as weather allows, and I always put it back on charge, but turn off the charger after a day or two. I never let it go for more than a week or so without topping it up.

Regards

[Nick R]

My fully charged lights dont work either ,

I just put a multi meter on to it when i want to check the charge .

Bought a cheap one , cut the prongs off and put a cig lighter attachment on the end to plug in for a reading

[Bigwings]

My fully charged light works on the third monday of every month with a z in it.

Common problem then.

I just put mine on charge now and again

[lukebl]

My fully charged light works on the third monday of every month with a z in it.

Common problem then.

I just put mine on charge now and again

That's good. I'm not the only one, then!

[dark knight]

What a great idea Nick,,now where's that cheap multimeter I had lying around...

[Takahashi]

I have the same problem, and mine's just a month or so old. I should've listened to Steve's advice to get a simple large battery instead. I fell for the "Big old torch / red torch / jump-start / multi-DC outs" marketing shenanigans.

Once bitten, etc...

[gary1968]

You could modify the power tank slightly and charge it with a Motorcyle Optimate charger. It will desulphate the battery, then check it, then charge it, then check it again and if all is OK will go onto a monitor / trickle charge. It is designed to be left connected indefinately. This is probably 1 of the best lead acid battery chargers on the market.

Gary