How to help maintain Good Battery Life
One of the up and coming trends these days is that people
are starting to build battery banks for the storage of power from their solar
panels and wind turbines. But in my opinion it does not just start there, a
good system of maintenance is essential to keep your batteries in good
condition.
We have noticed that one of the recent trends is for people
to buy Cheap Leisure Batteries for
this purpose and one of the reasons is because the internet has driven down the
prices of these batteries and they being used more and more for battery storage
and also for the battery banks that are used on canal boats and other river
craft.
A few years ago the main batteries used these boats were in
reality Truck Batteries. The change
came when companies like Johnson Controls started to make similar size
batteries that came with thicker plates, for increased storage capacity. These
batteries were really Starter Batteries,
but will now double up as storage batteries. The most popular one is 110 amp
Leisure Battery, that is marketed by Numax and a couple of other battery
companies.
These batteries sort of double up as a starter and storage
battery, but must not be mistaken for a genuine storage battery, which is an
AGM (Absorbed Glass Matting) that is a deep cycle battery. These batteries now
cost about twice the price as a Leisure
Battery, but are solely made for the storage of electricity. These are in
fact the correct batteries for the job of the energy storing of solar power,
but they are more expensive and do not need as much looking after as the 12
volt lead acid batteries that are now more commonly used. One important thing
to remember is that you must not dis-charge your leisure below 80%, because
this will damage your batteries. AGM batteries can be totally discharged and
will make a full recovery, this is one of the reasons that they cost more
money, they have much more plate capacity and storage than a lead-acid battery.
A couple of battery facts
The leisure battery is a flooded lead-acid battery and does
require some looking after to keep them in tip-top condition. The main ones now
come in a sealed casing with a blow off valve that will go off if the battery
gets overheated for some reason, letting the built up pressure escape. Some
leisure batteries especially the smaller 75
amp Leisure Batteries do have screw tops similar to some car batteries;
these must be looked after as follows.
Adding Water to the battery
If you have a screw top battery or batteries, it is
important to check the fluid levels (electrolyte) on a regular basis. This is
because the battery gives off some gasses while in operation (oxygen and
hydrogen), this depletes the amount of liquid in the battery and will need
topping up with distilled water. You can buy this at your local auto store, or
use the water that is produced from a certain type of electric dryer. The electrolyte
Car batteries, but most car batteries are now sealed similar to
the sealed leisure batteries.
Typical 110 amp leisure battery now in common use |
In hot weather the batteries with screw caps also loose the liquid
due to evaporation, but here in the UK the effects of weather are minimal. It
is also a good idea to be methodical and make a note of when you had to top the
battery up, this is because it is the first sign of a battery cell problem if
the cell keeps on needing fresh water.
Keep you battery bank clean and dirt free
This applies to the Battery
terminals; we have all seen the corrosion that can take place wherever
battery acid is present, and this is no different on a battery bank. It is important to watch out for this
and a good battery terminals.
battery bank for solar storage |
Also inspect your connecting wires, a corroded or terminal
could form a high resistance on a system that is connected in series and will
prevent the batteries from charging and dis-charging correctly and creating an
imbalance in the battery bank, with a possibility of reducing the battery banks
performance and lowering the life of the batteries in the entire bank.
To conclude the article you are better of using AGM Batteries for any type of storage
in a bank or indeed in two’s or three’s .and use a reputable make ,such as
Trojan batteries that are on sale on www.batteriesontheweb.co.uk and they will last you up to four times
longer than a leisure battery. I also know though that people do use free flow lead
acid batteries that are on sale as leisure batteries, but do not let them drain
completely and look after your batteries no matter what type they are and they
will last longer.
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