08/01/2017
Car batteries for K5
Typically a battery can last from 18 to 30 months and it is advisable to change a 30 month old battery even though it appears to be still working. Old batteries can affect your car adversely, so it is advisable to replace it before it gives you problems, not after.
Signs of a weak battery include:
1. engine cranks and starts with difficulty
2. engine starts fine one day and problematic the next
3. wiper function slower, headlights dimmer, horn softer, etc.
The majority of car batteries have 6 cells, each giving 2.1 volts for a total of 12.6 volts fully charged. The important parameters to note are:
1. cca/ca - amount of current the battery can provide at 0F/32F (minimum 600 for K5)
2. Ah - ampere hours on how many amps can be discharged in a 20hr period
3. RC - reserve capacity - measured in minutes showing how long your battery can power your car's vital components should the alternator or system fail.
Please note that the best battery is not the one with all the highest ratings but has to be compatible with your car's specs, above or below which can harm the car's electrical system.
For our K5, the suitable battery that can be used include 80D26L or 70D26L. The smaller 55D23L can be considered. The meanings of the different nomenclature are as follows:
a) 55/70/80 is the capacity (amount of ampere hours)
b) D refers to the standard terminal (B=small terminal, E=long batteries)
c) 23/26 refers to the battery length in cm
d) L means the negative terminal is on the left, R is on the right
Note that American batteries have different codes.
The battery in the pic above has RC of 130 mins, cca of 620 and AH of 20 hours.
Batteries also have a label showing the month & year it is manufactured. Some companies use a code instead, a letter for month and a number for year, viz. 5K14 means 14 Nov 2015.