Batteries And Electricals

We offer battery replacement services, charging system checking and alternator testing services as support service to our customers who by batteries and components from ous platform. This we can do in our premises or at locations desired by customers nationwide. Though the service is free, shipping charge applies to service requests outside Lagos.

Changing or replacing batteries
Manufacturers advise that:

  • When removing battery from a vehicle, the negative ground must be disconnected first. This is to avoid short-circuits between the vehicle frame and the battery terminal.
  • When installing battery in a vehicle, first connect the positive ground to avoid this same risk.
  • When lifting battery from the mount, remove loose metals, tools and metal bracelets from the engine compartment.
  • When filling lead-acid batteries with acid, care should be taken to prevent damage to eyes or skin. This risk has however, been removed by the use of maintenance-free batteries.

Deterioration in Batteries

Because batteries (especially lead-acid) discharge gradually when kept idle for a long time, it is advisable to query the level of deterioration in capacity when buying a new battery or reusing a battery long kept in storage.

By standard, batteries are date-coded to identify old or deteriorated batteries:

  • The date is usually in text or alphanumeric codes
  • The codes follow letters of the English alphabets. For example A stands for January, B for February, etc. Letter ‘I’ is excluded in the coding to avoid confusing it with figure 1.
  • The second character, a single digit, indicates the year of manufacture (e.g 1 for 2001 etc).

Terms & Ratings

Ampere-hours (A·h): this is the total amount of charge that a battery can store and deliver at its rated voltage. It measures how long (in hours) a battery can sustain the discharge of current (in amperes) at the given rated voltage.

Hot cranking amperes (HCA): this is the amount of current a lead acid battery can produce at a temperature of 27 °C for 30 seconds and maintain at least 1.2 volts per cell.

Cold cranking amperes (CCA): this is the amount of current a lead acid battery can produce at a temperature of -18 °C (or 0 °C for marine cranking ampere MCA) for 30 seconds and maintain at least 1.2 volts per cell.

Reserve capacity (RC): this is a battery’s ability to sustain a minimum electrical load. For instance, it is the time that a battery will continuously deliver 25 amps at 27 °C before its voltage drops below 10.5 volts.

 

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