When it comes to building a reliable battery bank for your solar power system, EG4 is a name that almost always comes up. In our opinion, that’s for a few good reasons.
Not only have we given most of their batteries and inverters positive reviews, the brand has a solid reputation for quality, performance, and strong customer support.
Two of EG4’s most popular batteries are the EG4 LL-S Server Rack Battery and the EG4 WallMount 100Ah Battery.
At first glance, these two batteries have really similar specs. Both pack 5,120Wh of storage, 100A of continuous output, and solid surge capacity. But as we have found in our real-world experience and testing, some small differences make one of these options better for certain setups than the other.
So, let’s break it down, point by point, and see which battery comes out on top in this battery-themed “This or That” showdown.
The two batteries bring pretty much the exact same numbers to the table:
On top of that, both come with identical display screens, the same Battery Management System (BMS), matching communication ports, and dual positive and negative terminals. For the basics, they’re virtually the same, so we have to give them a tie.
Here’s where the WallMount pulls ahead, mostly because it uses quick-connect terminals. If you’ve ever had to wire up a battery bank the old-fashioned way, you’ll know just how nice these are. Quick connects save time, reduce frustration, and open the door to more versatile setups.
The LL Server Rack works fine, but this little upgrade makes the WallMount slightly more user-friendly. However, it is worth keeping in mind that wall-mounting the WallMount battery does require a little extra setup compared to just sliding a server rack battery into a cabinet.
Still, point to the EG4 Wall Mount Battery.
The LL Server Rack has a plastic front panel, while the 100-amp WallMount features a fully metal case.
That means better durability, a more premium feel, and frankly, a cleaner look. The WallMount also includes rubber feet for stability and protection if you decide to use it on the ground, as well as a built-in wall-mounting bracket. Not only do these features make installation a little easier, they give the unit a much cleaner look and quality feel.
The LL Server Rack Battery doesn’t exactly look bad or feel low-quality, this round is just more of a reflection on how impressed we were with the EG4 100 amp WallMount Battery.
That’s another round to the WallMount.
Whether you want it mounted on the wall or tucked away directly on the floor, the EG4 WallMount gives you options. The EG4 LL Server Rack, by its nature, needs… well, a rack to sit in. If you’re just starting small, that extra requirement can feel like overkill.
Another point to the EG4 Wall Mounted Battery.
This one’s really easy. Both are EG4 batteries, and that brand has some of the best support in the solar industry.
Whether it’s warranty help, setup questions, or replacement parts, their customer service is really solid. The team at EG4 just seems to stand by their products, and they have a genuine interest in listening to customer feedback, including our own.
If you want to take that support to another level, we’d recommend ordering your EG4 batteries and inverters from Signature Solar. Not only are they EG4’s primary retail partner, we’ve mystery shopped Signature Solar plenty of times, and we’ve always been impressed.
The score remains the same after this round, but it was worth shining a light on how respectable the customer and tech support is from both EG4 and Signature Solar.
Here’s where the Server Rack finally fights back. If you’re going big, meaning you plan on building out a high-capacity system for whole-home backup power with multiple batteries, the server rack-style of battery really shines.
You can stack units neatly by simply sliding them into one or more cabinets, which keeps everything clean and streamlined. While the EG4 LL Server Rack Battery doesn’t come with this cabinet, it’s not overly expensive, and we think the quality is really impressive. It also has built-in caster wheels, so you can move your battery bank around for a more mobile setup.
Beyond just how easy it is to scale up a backup power battery bank with server rack batteries, the EG4 LL-S 48V Server Rack Battery can be paralleled with up to 64 units. That means you can scale it anywhere from just over 5kWh to 327.6kWh, which is crazy!
The WallMount Battery works great for smaller setups, but if you add too many, you’ll end up with batteries spread across your floor or crowding up your walls. Not exactly an efficient use of space.
On paper, the EG4 Lithium Server Rack is cheaper at just $1,329 to $1,449, depending on when you order. On the other hand, the WallMount usually sits at closer to $1,599.
But there’s a catch: the LL Server Rack really requires that cabinet I mentioned earlier.
Even if you don’t go with the EG4 Enclosed Cabinet, and opt for some DIY shelving, you’ll still have to spend some money and it’s not going to be quite as simple as just buying the battery itself.
If you only need one to four batteries, the WallMount often ends up being the better value. But if you’re scaling up to anything above that, like let’s say a dozen batteries? The Server Rack is going to win in the long run.
We’ll say this round is a bit situational, but since we’re focusing on most people (who want just a few batteries), the EG4 WallMount takes this last round.
If you’re building a smaller system, like something in the 5kWh to 2kWh range, the EG4 WallMount 100Ah Battery is probably going to be the better choice. It’s easier to set up, feels sturdier, and gives you a bit more flexibility for installation.
But if you’re going big, the EG4 LL-S Server Rack has the edge in scalability and cost-effectiveness. With that said, if you’re still unsure which type of battery you should choose, we put together a Battery Buyer’s Guide that could be helpful.
But for most people who are just starting out, and within the context of our “This or That” showdown, the EG4 100A WallMount Battery comes out on top.
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