Why Are Batteries Different Sizes Same Voltage. Begingroup The cold cranking amperes CCA rating of a starter battery is defined as the amount of current a battery can deliver while maintaining at least 12 V per cell under certain conditions -- that is maintaining at least 72 V across the terminals of the battery which is much less than the 126 V fully-charged open-circuit voltage or the 119 V fully-discharged open-circuit. R1 R2 and U2 are in series so the total resistance is 10000000 10000 4000 10014000 Ω.
It is important to use the same battery type with equal voltage and capacity Ah and never to mix different makes and sizesif you need it to run longer then the 72AH would last most of the night. IVR True if youre asking about resistance. Now lets say I have three 8D sealed batteries for RV power.
Connecting in series increases voltage only.
Batteries can be either high-power or high-energy but not both. They can have different capacities on account of size or age but the same chemistry eg. It begs the question why are there so many different types of batteries. Similarly the combination of R1 R2 and U2 is in parallel with the battery so the voltage across the combination is 8000 V.
