So you have a boat, RV, solar setup, or another application. And it demands more voltage or ampere capacity than one battery can muster. What do you do? Connecting batteries in series or parallel could be the solution. But when you're trying to decide to connect your batteries in series vs. parallel Contact online >>
So you have a boat, RV, solar setup, or another application. And it demands more voltage or ampere capacity than one battery can muster. What do you do? Connecting batteries in series or parallel could be the solution. But when you''re trying to decide to connect your batteries in series vs. parallel, which is better?
Both methods increase total available energy, measured in watt-hours. But they do this in different ways, with different results. Read on to discover how to connect your batteries in series vs. parallel, and which method is best for you.
Connecting batteries in series increases the amount of voltage. It doesn''t increase the ampere capacity. But two batteries connected in series means their positive and negative terminals will work together. For example, if you connect two 12V 30Ah batteries in series, you get a combined voltage of 24V. The capacity, 30 amp hours (Ah), stays the same.
Before you connect batteries in series, ensure they have the same voltage and capacity rating. Mixing and matching is ok for your closet, but it is a no-go when creating your battery setup! Doing so can be dangerous and may damage your batteries.
So what''s the main difference between putting your batteries in series vs. parallel? Connecting in series increases voltage, but wiring in parallel increases your battery bank capacity. The total voltage does not change.
But there are disadvantages. Placing batteries in parallel can make them take longer to charge. Also, the lower voltage means a higher current draw and more voltage drop. It may be difficult to power large applications, and you''ll need thicker cables.
A series-parallel connection is when you wire several batteries in series. Then, you create a parallel connection to another set of batteries in series. By doing this, you can increase both voltage and capacity.
For example, say you connect two 12v 100ah batteries in parallel. It''ll stay a 12 volt system, but the amps will double to 200ah. And the batteries will last a lot longer, of course.
When you have two or more 12 volt batteries hooked up in series, you develop 24 volts, but your amps don''t change. On the other hand, if you have those 12 volt batteries wired in parallel, it''s still a 12 volt system, but the amps will increase. (See example in the section below.)
Batteries last longer in parallel, because the voltage remains the same, but the amps increase. If you connect two 12v 50ah batteries in parallel, it will still be a 12 volt system, but the amps will double to 100ah, so the batteries will last longer. On the other hand, when you connect batteries in series, voltage is increased while capacity (ah) stays the same.
It depends on the batteries - if you have Ionic batteries, chances are you can (double check). Many Lifepo4 batteries can''t be hooked up in series, because they''ll get damaged. But most Ionic lithium batteries are capable of series connections. Not all of them are, so please check your battery''s user manual.
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