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Frequently Asked Questions

What is a Battery ?

A battery is a portable energy source that produces electrons through a chemical reaction.A battery is made up of three basic components - a cathode, an anode and an electrolyte.

Cathode: The positive portion of the battery.

Anode: The negative portion of the battery.

Electrolyte: A liquid solution that aids in the flow of energy.

The electrons collect on the negative terminal of the battery. When a connection is made between the positive and the negative terminals of the battery the electrons flow between the terminals. 

Measuring your battery condition

When measuring a battery condition ensure that the battery is at rest - no input/output. (for at least 3 hours)

Connect a volt meter between the battery terminals. using the table below check the voltage to determine your battery state .

Please note this table will determine the state of the battery when the battery has been at rest for > 3 hours and the battery temperature is 77 deg F , if the battery is at a lower temperature a lower voltage reading will be obtained .

% of full charge 12V  24V
100% 12.7 25.4
90% 12.6 25.2
80% 12.5 25
70% 12.3 24.6
60% 12.2 24.4
50% 12.1 24.2
40% 12 24
30% 11.8 23.6
20% 11.7 23.4
10% 11.6 23.2

By using a hydrometer the specific gravity of the electrolyte to determine the state of charge

Specific Gravity -

1.265 = 100% Charged.

1.239 = 75% Charged.

1.200 = 50% Charged

1.170 = 25% Charged

1.110 = Discharged fully

Readings correct at 75 Deg F

 

Wiring Batteries

Batteries can either be wired in series or parallel.

Wiring in series

This is the method used when connecting batteries together to increase the Volts only. Series wiring is connecting the positive terminal of one battery to the negative terminal of another.

Joining two 12 volt batteries rated at 100 amp hours in this method would give you 24V rated at 100 amp hours.

Series wiring increases voltage but NOT amp/hour capacity

Wiring in Parallel

This is the method used when connecting batteries together to increase the amps only. Parallel wiring is connecting the positive terminal of one battery to the positive terminal of another and the same with the negative terminals. 

Joining two 12 volt batteries rated at 100 amp hours in this method would give you 12V rated at 200 amp hours.

Parallel wiring increases the amp/hour capacity but NOT the Voltage


Warranty

All of our Battery products carry between one and seven years manufactures warranty against failure and defects under reasonable operating conditions.

Numax, Lucas & Varta Batteries
Should your LUCAS VARTA OR NUMAX battery fail within the manufacturers specified warranty period. Your battery can be return to a number of service centres thought-out the UK or alternatively back to us (at the customers cost) however prior to returning a battery back to us, we request that your battery is independently tested to assess its condition. (Please obtain a print out from the battery testing equipment from the independent battery testing outlet of which the test is carried out) Please contact us for further information. Should your battery prove to have a manufacturing fault you will be sent a replacement.
The manufacturers guarantee cannot be transferred and only applies to the original user of the battery.
The manufacturers guarantee commences from the date of purchase.
The manufactures guarantee does not affect the statutory rights of the consumer in any way.
Non Manufacturing Faults
We will not replace batteries that have failed due to misuse and we would recommend you read the following guide.
Battery problems - Non-manufacturing faults
Sulphation:
If a battery is allowed to stand in a discharged state for an excessive amount of time, a chemical reaction takes place, which can permanently impair performance of the battery - this is called  sulphation.
Sulphation can be seen as a fine white/grey coating on the plates of the battery. In most cases this signifies irreversible damage and the battery will not be serviceable. This damage can occur either in storage or if the battery is installed in a vehicle (or equipment) that is not used for a period of time, for example a tractor, motorcycle, or boat. Even a car or truck that is stored with the battery connected can still damage the battery in this way. This is because there is a permanent drain on the battery from devices on the vehicle such as the clock, alarm etc. As a result the level of charge in a car battery falls, and after a period of time sulphation will build up on the plates.

The sulphation (lead sulphate) hinders the chemical reaction between the acid (electrolyte) and the active mass (lead compound) in the plates and prevents the car battery from operating as normal.

Wear and Tear:

During the charge and discharge cycle, material from the battery plates (active mass) is in motion, through the electrochemical reaction that produces electricity. Every time the battery goes through a charge and discharge cycle, a small amount of the active mass is lost from the plates. Because the ultimate life of a car battery depends on so many factors, it is difficult to stipulate a minimum/maximum life expectancy. This process of normal ageing through the charge and discharge cycle will eventually cause the battery to lose capacity, and there come to the point where the battery can no longer start the vehicle/equipment. A battery only has a finite number of cycles (x) it can go through before it loses its capacity to perform. Vehicles with high usage such as taxi’s, minicabs, trucks, and buses will often subject the battery to its x number of cycles but over a much shorter time. As a result, batteries on these vehicles can display the above symptoms after 12-24 months.

Deep cycling:
 As above, every time a battery goes through a charge and discharge cycle a small amount of the material from the plates is lost. If a battery is subjected to deep discharging (i.e. over 40%) and then rapid charging, this process is accelerated. Additionally, if during the recharge the battery is not adequately compensated for the discharge cycle, the battery will quickly exhibit loss of performance. Even after recharging the voltage will be low (under 12.4v) but the cells will generally give even readings. 

Overcharging:
If the regulator is not set properly, then the battery can be subjected to an excessive charge. If left unchecked the battery will overheat and will start to evaporate the electrolyte. The overcharging will cause the accelerated breakup of the active mass on the plates and the battery will lose performance. This is generally obvious from the examination of the battery - the acid levels will be very low, and quite often a black coating will be visible on the filler caps.

Physical damage:

If the battery is fitted incorrectly, if the connector leads are hammered onto the terminals, or if the leads are not properly fastened, the battery will have obvious damage to the casing or the terminals.
Motorcycle Jet Ski and ATV batteries
Motorcycle Jet Ski and ATV batteries advertised on Lake Battery Website are designed to be used on equipment as specified by the manufacturer. Batteries are supplied as replacement is guaranteed against failure due to faulty manufacture or materials. In the event of such a failure, the battery will be replaced. The replacement battery will then be guaranteed for the remainder or the original battery guarantee period.
The guarantee periods are as follows: 
Motorcycle Jet ski and ATV batteries 1 Year


The guarantee does not cover:
• Use of a battery on a vehicle unit for which it is not recommended or on which it has been installed and commissioned incorrectly.
• Failure or deterioration resulting from the malfunction of any charging system.
The manufacturers guarantee cannot be transferred and only applies to the original user of the battery.
The manufacturers guarantee commences from the date of purchase.
The manufactures guarantee does not affect the statutory rights of the consumer in any way.

Links


Lake Batteries stocks a great range of leisure batteries for motorhomes and caravans. To find the right leisure battery for you, use our catalogue at the top of this page to view our full range or visit our leisure battery page.
Our products include cheap car, motor bike and golf batteries, as well as top brands like the Numax and Varta range. If you'd like any advice on which would be the best battery for your needs, pop into our showroom or call us on 0800 335 7 338 .
Once you've chosen a battery, you can reserve it online and collect in-store, we also offer free checks for your existing battery, to help ensure it's always in good condition.