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|oldun||I'm lucky. If I rotate my from seat and then slide it fully back the cubby hole under the seat is almost fully exposed.|
these do seem to fit the bill to replace leisure batteries.
No criticism intended, Patrick, we don't see any of these low-cycle batteries, but we wouldn't look for them in our market either.
Originally Posted by listerdiesel
We are full-timers. If we are off grid and static for a week we rely on the solar panels to provide charge (480w). If we take three quarters of capacity overnight we are usually back at full by midday but we will use 5 cycles. That is 30 weeks in a 150 cycle battery. Given that when on hookup we use the batteries as a buffer to the mains, we still use 2 cycles a week.
Varta are a well respected maker, I would have thought. They push their LFS range for motorhomes and this is from their spec sheet:
Long lasting: up to twice the cyclic stability of conventional flooded batteries (up to 200 cycles @ 50% DOD)
that is UP TO 100 cycles! The LFS range is popular with OEMs too...
I do agree that keeping topped up is good but the nature of our activities doesn't really lend itself to do that.
The single most important thing with any Lead-Acid battery is to keep it charged up.
No other single thing affects the life of a battery than this, even allowing for the cyclic life, which is normally far higher that the 150 cycles previously quoted, but batteries do vary with quality.
I've never seen cyclic life reached on most batteries, only industrially on some AGV's in a factory that went and had a recharge as soon as the on-board computer saw the capacity below a certain level, and at £9000 a battery, they were not cheap.
Batteries are far better these days, most people see 7-10 years out of starter batteries on cars, and as we have seen from the responses above, these sort of figures are getting to be quite common.
Originally Posted by raynipper
Just replaced my 10 year old leisure battery with one of these http://www.tayna.co.uk/Numax-CXV30HRMF-P3673.html. Hopefully it will last just as long
These look good ......................................
I will be needing 3 before too long.£££££
The thing with leisure batteries that is more important than even ampere-hours is maximum cycles of charge.
If you are offered a battery which doesn't state that information, don't buy it.
Many leisure batteries will have 150 cycles of charge. That is from 11.8v to fully charged just 150 times and then it is a dead, deceased, battery-no-more battery. Recharge from say 12v to fully charged is half a cycle, roughly.
There are batteries that will give 1000 cycles but the best you will usually find is 500.
If your battery is really difficult to get at, look for a "sealed lead-acid". They are maintenance free and much better performance than gel or AGM. If there is room, go for semi-traction.
|dolcefarniente||They last until they fail. There is no rule of thumb. Neglect is the biggest cause of failure.|
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