Battery recommendation

[steve garwood]

Evening fellow windies. My leisure battery started to die on me today, so phoned a couple of companies I deal with and was recommended one.

Now we all know leisure batteries shouldn’t be allowed to go under 50% charge or it will start to damage it.

I was recommended a 12v 75amp ev12 today. Apparently it can be drained down to 0% thousands of times without any issue to the battery.

Any of you folks heard of this?

Apparantly their used in mobility scooters.

The guy reckoned it would better than using a standard leisure battery 

 

[Kleenwell]

No battery likes being drained to 0%. Fact

sime tolerat it better than others

when I get my new van, I intend to have 2x115ah leisure batteries.   Twice the available run time.   But in effect, I will only have 115ah of usable power.       

I would just go with the largest battery you can afford.    75ah sounds rather small to me

 

[Iron Giant]

This could be a good option Yusa Battery as it has a NCC Class B rating which means it should last longer according to Halfords information (scroll down the page and have a look)  my only reservation is that Yusa make Halfords batteries and we know what they are like  also there are decent options with the Numax they have a few options as the max length battery to fit in a StreamBox pump box is 278mm @spruce is our man 

 

[spruce]

Evening fellow windies. My leisure battery started to die on me today, so phoned a couple of companies I deal with and was recommended one.

Now we all know leisure batteries shouldn’t be allowed to go under 50% charge or it will start to damage it.

I was recommended a 12v 75amp ev12 today. Apparently it can be drained down to 0% thousands of times without any issue to the battery.

Any of you folks heard of this?

Apparantly their used in mobility scooters.

The guy reckoned it would better than using a standard leisure battery 

Motobility Scooters usually use AGM batteries and being AGM would need a dedicated charger. AGM use a different charging algorithim to standard lead acid batteries. What the salesmen say and the reality are usually 2 different things. I know because I had to deal with the aftermath of sales staff who supplied an underspeced machine for a customer's requirements because it fitted their price expectations. As @Kleenwell rightly says, there is no battery that will stand being drained 1000's of times. If a sales person said that to me I would walk away as he/she obviously doesn't know or care what he/she is talking about and there is no way I would want to deal with this person or the company that employed the idiot.

https://www.ebay.co.uk/itm/Haze-HZB-EV12-18EX-12V-26Ah-Slimline-AGM-Battery-/131458121349

"Cycle Life: To ensure a maximum cycle life it is important that the battery be fully recharged immediately after use. Cycle life is dependent on depth of discharge (DOD) Estimated cycles expected: 100% DOD = 270 cycles. 75% DOD = 350 cycles. 50% DOD = 550 cycles."

 

[Iron Giant]

A battery of a length of 269mm would be the biggest battery, but Just checked my pump box

County Durham Lad

 

[spruce]

This could be a good option Yusa Battery as it has a NCC Class B rating which means it should last longer according to Halfords information (scroll down the page and have a look)  my only reservation is that Yusa make Halfords batteries and we know what they are like  also there are decent options with the Numax they have a few options as the max length battery to fit in a StreamBox pump box is 278mm @spruce is our man 

I would head towards this and pack out the gap with a piece of wood or other packing material.

https://www.tayna.co.uk/leisure-batteries/numax/cxv24mf/

I have no idea what data they draw their stated 500 cycles from, but I do know from personal experience that we haven't had a single issue with the Numax batteries we use.

But as with any 75/85 amph battery, it needs to be charged every night IMHO. If you are taking 30amps out of your battery during a days work then your are rather close to 50% capacity remaining and you haven't enough to get you through the next day without starting to effect the longevity of the battery. (Those who work without controllers will find their pumps can draw around 7.5amps an hour of pumping time. Using a Varistream with regulated flow, we use around 4.5amps an hour per pump.)

I believe this NCC rating is a good thing as we can now get an idea of how batteries match an independent set performance standards.  6 or 7 years ago the battery manufacturers had to revise their battery specs because they were all caught out 'over clocking' them. Suddenly the same size battery, same make and model dropped from 85amph to 75amph, 115amph to 105amph. Now the NCC rating has thrown up the poor performance of Halfords leisure batteries classing them as a C rating. It seems to fit in with a number of windies on the forums who seem to be getting longevity issues with their Halfords purchases.

Just because a battery is made for Halfords by Yusa doesn't mean they are made to the same quality. Bosch make electronic equipment of the motor industry. The have 2 classes of the same product. VW go for the better quality electronics which are more expensive. Ford go for the cheaper option which, although made by Bosch, don't use especially selected electronic components. Ford have 'crunched the numbers' and by their 'economies of scale' are able to justify the warranty on a slightly higher failure rate. VW focus their ethos on German built quality.

 

[Iron Giant]

 
I would head towards this and pack out the gap with a piece of wood or other packing material.
 
https://www.tayna.co.uk/leisure-batteries/numax/cxv24mf/
I have no idea what data they draw their stated 500 cycles from, but I do know from personal experience that we haven't had a single issue with the Numax batteries we use.
 
But as with any 75/85 amph battery, it needs to be charged every night IMHO. If you are taking 30amps out of your battery during a days work then your are rather close to 50% capacity remaining and you haven't enough to get you through the next day without starting to effect the longevity of the battery. (Those who work without controllers will find their pumps can draw around 7.5amps an hour of pumping time. Using a Varistream with regulated flow, we use around 4.5amps an hour per pump.)
 
I believe this NCC rating is a good thing as we can now get an idea of how batteries match an independent set performance standards.  6 or 7 years ago the battery manufacturers had to revise their battery specs because they were all caught out 'over clocking' them. Suddenly the same size battery, same make and model dropped from 85amph to 75amph, 115amph to 105amph. Now the NCC rating has thrown up the poor performance of Halfords leisure batteries classing them as a C rating. It seems to fit in with a number of windies on the forums who seem to be getting longevity issues with their Halfords purchases.
 
Just because a battery is made for Halfords by Yusa doesn't mean they are made to the same quality. Bosch make electronic equipment of the motor industry. The have 2 classes of the same product. VW go for the better quality electronics which are more expensive. Ford go for the cheaper option which, although made by Bosch, don't use especially selected electronic components. Ford have 'crunched the numbers' and by their 'economies of scale' are able to justify the warranty on a slightly higher failure rate. VW focus their ethos on German built quality.
 
 

Do you mean charge the battery every night without fail all year round.

County Durham Lad

 

[spruce]

Do you mean charge the battery every night without fail all year round.

County Durham Lad
 

It is down to how much you draw from your battery during your working day. If you have been charging your battery every couple of days in summer and everyday in winter and your battery is lasting then I would continue with your charging routine as its working for you. Personally, I'm happy with 3 years service from a battery. However, this current battery is nearly 4 years old so maybe my standards of battery life expections will increase in the future.

If you have to lug a heavy battery box inside everytime you had to charge the battery then I would definitely accept a lower longevity with a longer time between recharges.

My son in law abused his battery. It slowly went flat and it got bench charged every few weeks when he cleaned windows with us. Its still going after 7 years. The battery manufacturers always say that once you use the battery to any extent, you need to recharge it immediately. Now maybe they will say that to cover themselves in event of a battery failure and claim. Are they over advising?

Its like the precautions list that is included with every pack of tablets the doctor prescribes.

 

[Iron Giant]

It is down to how much you draw from your battery during your working day. If you have been charging your battery every couple of days in summer and everyday in winter and your battery is lasting then I would continue with your charging routine as its working for you. Personally, I'm happy with 3 years service from a battery. However, this current battery is nearly 4 years old so maybe my standards of battery life expections will increase in the future.
 
If you have to lug a heavy battery box inside everytime you had to charge the battery then I would definitely accept a lower longevity with a longer time between recharges.
 
My son in law abused his battery. It slowly went flat and it got bench charged every few weeks when he cleaned windows with us. Its still going after 7 years. The battery manufacturers always say that once you use the battery to any extent, you need to recharge it immediately. Now maybe they will say that to cover themselves in event of a battery failure and claim. Are they over advising?
Its like the precautions list that is included with every pack of tablets the doctor prescribes.

I have abused batteries previously maybe 6-7 times over a year by not charging enough, but stillness only managed 12 months out of a Halfords battery with a 2 year warranty

County Durham Lad

 

[Dave Shaw]

I’m currently using a yusa battery and 3 years in of constant use being charged every 2-3 days it’s still going strong with no signs of giving up.


Sent using the Window Cleaning Forums mobile app

 

[steve garwood]

Thanks guys ?

 

[steve garwood]

Left the battery on charge all night last night (smart charger). 

Started work at 8, it was 12.9.

Finished at half 1, it was 12.2.

That isn’t constant running, used the trolley for a couple of houses.

Doe’s this indicate it running down a bit quick in your opinions?

P.S. working on my own today, so only one pump on the go ?

 

[spruce]

Left the battery on charge all night last night (smart charger). 

Started work at 8, it was 12.9.

Finished at half 1, it was 12.2.

That isn’t constant running, used the trolley for a couple of houses.

Doe’s this indicate it running down a bit quick in your opinions?

P.S. working on my own today, so only one pump on the go ?

You need to let the battery recover for around 4 hours before taking a voltage reading Steve. But even after a short idle time I would expect the battery to recover to more than that. If I were you I would replace the battery tbh.

 

[steve garwood]

You need to let the battery recover for around 4 hours before taking a voltage reading Steve. But even after a short idle time I would expect the battery to recover to more than that. If I were you I would replace the battery tbh.

Cheers @spruce.