13 yr old Lead Acid battery

[Mick H]

Just connected a 13yr old lead acid battery, to our battery bank, and attached a cheap Chinese inverter. Wonder how long the battery will last ?
Only going to use the inverter for a toaster. and boiling an electric kettle. The old battery is a Enduroline 110amp, but, obviously will not have anything like that capacity, now.
It still holds 12.7 volts, after standing for a couple of weeks. Interesting experiment !

 

[Robmac]

I would think a kettle would knock the stuffing out of it pretty quickly.

What size inverter?

 

[st3v3]

3kw? 10 minutes if you're lucky.

 

[Robmac]

A 13 year old Lead Acid wouldn't fill me with confidence to be honest.

You may need a backup plan.

 

[barryd]

I hope you like cold tea and lightly done toast.

I'll be very happy to eat those words though.

 

[Fisherman]

Even a 1kw inverter could discharge an old lead battery to quickly, but unless you have a low wattage kettle and toaster you will require a 2-3kw inverter. Boiling a kettle will use 5-6amps from a battery with only 50 useable amps that’s 10% per kettle of water, the toaster will be roughly the same. So that’s 20% of your usable amps.
But doing this will probably damage the battery due to such a high discharge rate.

We have a 700w kettle running on a 1kw inverter and 2 100ah lithium batteries.

 

[Trotter]

5 year old battery
Happy Birthday to you, happy birthday to you etc

 

[Mick H]

I would think a kettle would knock the stuffing out of it pretty quickly.

What size inverter?

It's a 2000w - 4000w modified sine wave inverter. First test was with the toaster, and it worked fine, so far.

 

[Mick H]

A 13 year old Lead Acid wouldn't fill me with confidence to be honest.

You may need a backup plan.

Don't need a back up plan, everything else is available, in the van, as usual. It's only an experiment, 'cos it will amuse me.

 

[Robmac]

Don't need a back up plan, everything else is available, in the van, as usual. It's only an experiment, 'cos it will amuse me.

It will be interesting. I've seen in the past batteries surpassing all of the science including on my first boat in the 80's. On that I had an old car battery running a 10" 12V TV, all the lights and the Water pump and we didn't seem to be able to wear it out, obviously not through an Inverter though.

It wasn't charged from the engine either, we just had a 10W Solar Panel at the time.

 

[oppy]

Our 9 year old lead acid battery died just a week ago !! We were on our way to Musselburgh and stopped at our favourite farm shop overnight. In the morning start.....clunk, jump leads out, 10 minutes later...clunk. Connect charger to inverter, an hour later...clunk, RAC , yup, 12volts ok but only 4 amps, so what do you suggest? Ah, a new battery, ok I said, can you arrange for a supplier for us?----Well would you believe he actually had one in a drawer, wonderful we thought, ta muchly, £225 !!!!!!!!!!!!!!!, still it got us going.

 

[trevskoda]

If you had a switch and relay like i have you could start using the less batteries.