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Lead acid battery basics: how do they work
When looking at how a lead acid battery works, it is necessary to
look at the basic components. The battery has comparatively few
components - essentially there are four main elements:
Positive plate: This is covered with a paste of lead dioxide.
Negative plate: This is made of sponge lead.
Separator: This is an insulating material between the two plates, but it
allows the electrolyte and the ions into it to enable conduction
without the two plates touching.
Electrolyte: This consists of water and sulphuric acid
These constituents are all contained within a plastic container
which acts to keep the electrolyte in and the battery together.
The overall battery will normally consist of several cells placed
in series to give the required voltage as each cell is capable of
providing an EMF of 2.1 volts.
In order to enable the basic lead acid cell to produce a voltage,
it must first receive charge. The voltage applied to provide this
must be greater than the 2.1 volts to enable current to flow into
the cell. If it were less than this, charge would actually flow out
of it.
Once charged, the cell or battery will be able to provide charge to
external circuits, often operating over several hours dependent
upon the drain on the cell or battery.
Specifications of ISO14001, ISO9001, CE Certificate and Black Color
Sealed 12V 4Ah Motorcycle Battery
Item | ISO14001, ISO9001, CE Certificate and Black Color Sealed 12V 4Ah Motorcycle Battery |
Model No. | 6-FM-4L/YTX4L-BS/GTZ5S |
Brand | Chuangxiang |
Nominal Voltage (v) | 12v |
Capacity(Ah) 10hr | 4ah |
Dimension (±1mm) L*W*H | 113*69*86mm |
Approx. Weight(kg) | 1.45kgs |
Container | ABS plastic |
Plate Type | Lead Calcium |
Separator | AGM |
No. Plates | 42 |
MOQ | 500 pcs |
Warranty | 12 months |
1*20GP Load Quantity | Approx. 16000 pcs |
Advantage of Chuangxiang motorcycle battery
Plate: Adopt unique formula improving utilization of active material in
plate, in addition, high pure lead ingot(#1 lead purity is 99.99%)
as raw material, so high cold cranking performance and low self
discharge rate.
Separator: Absorbed glass mat technology, superior ability of absorbing acid
contributes to eliminate acid spill.
Terminal: High integrity of terminal sealing avoids acid leak, lead or
copper terminal for choose.
Container: Reinforced ABS container great performance-resistance to gasoline
and alcohol gasoline. Integrity of ABS container can resist the
leak of gas and acid during the process of use-age, it is
environmental.
Quality control: All material must be strictly inspected before use, each process
is strictly implemented by standard operation procedure, each
product must be inspected before delivery to assure high quality
product to client.
Valve Regulated Lead Acid (VRLA) Batteries
Also called Sealed Lead Acid (SLA) batteries.
This construction is designed to prevent electrolyte loss through
evaporation, spillage and gassing and this in turn prolongs the
life of the battery and eases maintenance. Instead of simple vent
caps on the cells to let gas escape, VRLA have pressure valves that
open only under extreme conditions. Valve-regulated batteries also
need an electrolyte design that reduces gassing by impeding the
release to the atmosphere of the oxygen and hydrogen generated by
the galvanic action of the battery during charging. This usually
involves a catalyst that causes the hydrogen and oxygen to
recombine into water and is called a recombinant system. Because
spillage of the acid electrolyte is eliminated the batteries are
also safer.