Hydro Diesel









Bosch Battery Guarantee


Bosch Batteries are guaranteed against failure through faulty workmanship or materials. Bosch Batteries are not guaranteed against neglect, abuse over or under-charging due to a faulty electrical system, nor fitment or a battery below the specified capacity in our catalogue or as specified by the Vehicle Manufacturer.

A Bosch Battery will be replaced or repaired if it becomes defective within the warranty period. The replaced battery is only warranted for the balance of the defective period.

Standard Bosch Batteries carry a 12 month Warranty.

Bosch Battery Care & Maintenance

For a Battery to remain in good working order, it should be maintained in a fully charged state by the vehicle's charging system. Where a battery is used as means of alternative power, it is generally charged by means of a battery charger which supplies direct current to the battery. A battery charger is also used to charge vehicle batteries that have become discharged due to faulty alternators or charging systems. If the following hints are adhered to, a battery will provide extended and trouble free service.


  • Store batteries in a fully charged state. (12V Battery above 12.4V)

  • Follow proper recharging schedules to prevent overcharging. Ensure chargingis conducted in a well ventilated area.

  • Ensure a correct polarity connection when recharging and fitting.

  • Store batteries in a clean and dry area. (to prevent deterioration)

  • Ensure that the battery is always clean and dry, with the terminals coated in Bosch Battery Terminal Spray (Termspray 1).

  • NB: Practice stock rotation and use a first-in-first-out system at all times.


  • Do not store batteries in a discharged state.

  • Do not test batteries by shorting accross terminal posts with wire, spanners, etc.

  • Do not allow open flames or sparks near a battery as it could explode (batteries give off flammable gasses).

  • Do not use a single spanner to the terminal clamp as this could damage the post lid seal. Use a spanner to the nut and a spanner to the bolt.

  • Do not top up cells with acid or tap water. Use only distilled water purchased from a battery manufacturer.

  • Do not use the starter motor to propel the vehicle or leave the vehicle parked with accessories switched on.

Battery Removal & Installation


1. Before removing the old battery, note which terminal (+) or (-) is connected to the earth cable. The earth cable is connected to the engine or vehicle body


2. Disconnect earth cable first to prevent sparks caused from short circuiting. Disconnect the other cable from the terminal post and then remove battery and battery hold-downs from the car.


3. Inspect the battery tray hold-downs and clamps and replace items damaged by excessive corrosion. Use a wire brush to clean corrosion from the battery tray and clamps. Clean all corrosion from tray, hold-downs and cables. Rinse thoroughly with clean water.


4. Using a post and clamp cleaner, clean both battery terminals and inside both cable clamps until they have a bright metallic shine. This cleaning ensures good electrical contact.



Carefully place the new battery in the tray making certain the same terminal (+) or (-) is in the same position in relation to the earth cable (as noted in Step1). This procedure ensures correct polarity. Afterwards, put on the battery hold-downs but do not tighten at this point.


6. Follow the reverse of the procedure in removing the battery (as noted in Step2). Connect the positive cable first, then connect the earth cable. Make sure both cable connections to the terminals are tight. Coat the terminals and cable clamps with Bosch Battery terminal spray (Termspray 1).


7. The hold-down nuts can now be tightened snugly. Do not overtighten.


Bosch Dealers

Back to Top