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In today's video, I'm diving into a common question in the off-grid solar world: How many batteries do you actually need for a 1000W inverter? You might be surprised to know that many guides out there get this wrong. I'm here to set the record straight with detailed calculations and comparisons.

We'll start by revisiting the concept of limiting current to 100A by adjusting the battery voltage, as discussed in my previous video about 3000W inverters. Then, we'll specifically analyze what's needed for a 1000W inverter.

Lead-Acid vs Lithium Batteries:
I'll compare lead-acid batteries, known for their .2C C-rate, with the more robust 1C C-rate of lithium batteries. You'll see how the amount of batteries required varies greatly between these two types, and why getting this right is crucial for the efficiency and longevity of your system.

Wire and Fuse Sizing:
An often overlooked but crucial aspect! I'll guide you through selecting the appropriate wire and fuse sizes for your system, explaining why these choices matter and how they contribute to overall safety and efficiency.

Why Size Matters:
Under or over-sizing your battery can lead to inefficiency and even damage. I'll break down why it's important to match your battery size accurately to your inverter's requirements.

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Also, don’t miss out on my free diagrams to help simplify your DIY solar power projects. Check the first link in the description to sign up and receive these valuable resources directly in your inbox.

00:00 Introduction
00:19 Calculating current
00:59 Lead-acid
02:07 Lithium
02:47 Why do we size like this?
03:39 Wire and fuse size

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