Battery Longetivity - Amps?

[HD]

Bit of general knowledge but also I will need it.

Basically, will bigger batteries store more energy/release more over a longer time? Or is it ones with more amps?

For example, one in a bike I am guessing will last minimal time compared to something that is used in something like a big diesel.

Need a battery for the garage and want one that will last the longest between charges (don't mind charging for 24hrs).

Ta
____________________
Rusty '02 Vito Camper + CBR600F3

[carvell]

You need to look at the Amp-hour rating, called 'capacity' sometimes (might be written as Ah).

The higher the Ah, the longer it'll last (and the longer it'll take to charge).

The theory is that a 5 Amp-hour battery (for example) will be able to supply 5 Amps for one hour, before it's flat. Practice doesn't really work as nicely as that, but it stands that the higher the Ah rating, the longer it'll last.
____________________
Yamaha TDM 850

[HD]

I'm with you, thanks! Kind of like a dodgy coulomb then?
____________________
Rusty '02 Vito Camper + CBR600F3

[keggyhander]

Just get a Motobatt and have done with it.

[AlexW]

The best thing would be a leisure battery, found in caravans and the like. Not cheap though.

[HD]

[c-m]

Of course the said 5ah battery will only last half the time if you are using 10ah
____________________
Motorcycle headlight bulbs and HIDs
Blogging about my bike and trips
https://ridershandbook.com/

[G]

The amp hours is the rating you are looking for.
1 amp hour is 1 amp for an hour.
So 10ah will give you 10 amps for 1 hour or 1 amp for 10 hours.

Vehicle batteries are designed to have high 'cranking amps'. This means they can give a big jolt of power to start the vehicle. However, the pay off is that they don't work well if they are frequently drained.
Leisure batteries can't give a big jolt, but are designed to be drained repeatedly.

You do get some that claim to do both, but then you're paying even more.

[HD]

I'm going second hand anyway, just giving them a ring now.
____________________
Rusty '02 Vito Camper + CBR600F3

[c-m]

[Taught2BCauti...]

On a vehicle, the Battery Compartment will also limit the range of the physical dimensions you can use, but you also need to consider the spec of the charging circuit.

I needed a 12volt DC supply for garage/workshop use, so I have an old battery that came off my car (after 6 years), hooked up to a 2W solar trickle charger.

It runs 2 x 18W fluorescent strip lights and is good for testing bulbs, motors, etc.

If you go to your local Council Re-Cycling Centre, you might get one for free!

[janner_10]

If you have mains in the garage but just want a 12 dc supply - just get a little tranny - about £20 from RS / Maplins etc etc.
I got pissed off with tossing about with batteries.
____________________
Yamaha FZS600 (Now gone to heaven) > CBR600F4i (SOLD) > '99 YZF-R1

[weasley]

[andyscooter]

as said above a normal battery will fail if repetedly drained

a lesiure battery is designed for this but pricey


if its just lights in the garage then consider using L.E.D lights rather then normal as they use less power
____________________
gilera runner vxr200 (chavped)
if its spelt wrong its my fat fingers and daft auto correct on my tablet

[HD]

The battery will be running 3 18w (I think) fluorescent twin bulb lamps. Won't be used constantly. Maybe a couple hours every few nights until I finish the bandit then it will literally be used when putting the bike away at night.

Phoned up the battery centre today and the only large ah battery they had was a 100ah battery that sell new for £160. He said they normally sell them for £60 but they have quite a few so would sell it for £40. That's all they have though

May have to look into a leisure battery then.
____________________
Rusty '02 Vito Camper + CBR600F3

[bLiXeY]

As has previously been said, car batteries are designed to give a lot of power on startup (called 'cold cranking amps') and then be immediately fed by the alternator. The reason a car battery is not as suitable is that they are not designed to drain below 10v before damage may occur to the cells...so, you can use one, but if you let it drop too low before charging you risk killing the cells/battery.

Lead acid 'Leisure' batteries or, as I'd said better still, 'gel' batteries are different, as they are called 'deep cycle batteries'. This means they can run below 10v with much less damage to the cells, but, they're more expensive.

The gel ones most so because they are also used on boats, as they don't give off as much gas when recharging...they give off so little in fact that you can even have them in the boat cabin where you sleep (lead acid batteries must be kept away from the cabin or in a ventilated container).

You need a leisure battery, or even better a gel battery if you plan on using the setup for a long time, but if it's only a few weeks, buy a cheapo second hand battery and just throw it away when it wont hold a charge anymore?

Alternately you could buy seconhand cheap batteries (with of course the largest amp hours you can find), but buy a solar panel that would replace the charge each day.

[G]

If you're going to spend £40, I'd go for something like this: www.ebay.co.uk/itm/180799046335

I've bought a bit more expensive one from that place and it's done the job fine (well, I bought two; one arrived damaged, but they sent another one ok.)