Up until now, the server rack battery crown clearly sat on EG4’s head. With solid performance, dependable customer support, good value, and great build quality, the EG4’s LL Server Rack Battery was our go-to recommendation.
However, a fairly recent development has shaken things up and threatened to push EG4 off the top spot: price.
Due to the recently introduced import tariffs, a lot of solar brands have upped their prices. While not every brand is putting these frees on the consumer, EG4’s batteries have seen a steep price increase. It’s not quiet enough to make us turn our backs on EG4, but it has made us want to take a fresh look at the competition.
With that said, we’d probably still say that EG4 is the best option for server rack batteries overall, but going with them is no longer the no-brainer it once was. So, let’s walk through the top server rack battery options we still recommend in 2025. We’ll highlight what each option offers, what they lack, and—crucially—how much they cost right now.
I know we just said EG4 raised their prices, but there’s just no getting around the fact that the EG4 LL is still the most well-rounded server rack battery you can buy.
It performed well in all of our testing, has great support if you buy it through Signature Solar, and you have the option to stack up to 64 of them in parallel for an insane total capacity of 327.6kWh! That scalability is just plain ridiculous, and makes it a great option for those building a large system, or simply unsure of what type of storage power they’ll need in the future.
The build quality is also excellent, and, as mentioned, the support team through Signature Solar is responsive and helpful (we’ve mystery-shopped them a few times and they delivered).
But here’s the catch: the price has recently jumped to $1,499, making it the most expensive battery on this list. There’s also the EG4 LifePower4, a near-identical battery without a screen, for about $100 less than the LL, but even with our $50 off discount code (SAVE50THESOLARLAB), you’re still paying a premium over some of the options we’ll cover below.
Still, if you have the budget flexibility, we’d still recommend the EG4 LL or LifePower4 first. But if cost is a concern, keep reading.
In second place is the Rich Solar Alpha 5 Pro—probably the sexiest-looking server rack battery available right now. We know, calling a server rack battery sexy doesn’t sound right, but it’s slim, sleek, and topped off with what we think is the best front display screen on the market. The Alpha 5 Pro isn’t just about looks either, it really held its own in our performance tests.
You have the option to parallel up to 15 of them, which isn’t nearly as high as the EG4’s ridiculous scalability of 64 units, but still good for medium-sized setups. Rich Solar also makes our favorite server rack cabinet, which has removable racks and a transparent front door—making setup and monitoring your battery bank way easier.
Best of all? Rich Solar told us they won’t be raising their prices in 2025. You can still grab the Alpha 5 Pro for just $1,200 through Shop Solar. Plus, you can knock another 4% off that price with our discount code (THELAB). Just don’t buy it directly from Rich Solar’s site—for whatever reason, they really inflate their prices there.
All sounds great, but there is one small issue: Rich Solar doesn’t make inverters that we love as much as what EG4 is putting out. DOn’t get us wrong, Rich Solar’s inverters aren’t bad, they’re just not as good as what you can pick up through EG4. In our experience, server rack batteries are just way easier to set up if you’re using an inverter made by the same company.
So, if you plan on purchasing an EG4, or you already have one, you might have to do a little more work to get communication between your Alpha 5 batteries and your inverter. Still, their batteries are compatible with most inverters, and it’s a small price to pay for solid value.
If you’re looking to save even more money, RUiXU’s 48V Server Rack Battery offers decent performance at a lower cost—but with one major sacrifice: RUiXU’s customer support is basically nonexistent.
We ran into some bizarre experiences trying to get help from them, like text messages at strange hours and phone numbers that went nowhere but Chinese answering machines. Basically, there’s just no real support from the brand to speak of. That might not seem like a big deal—until you actually need help with something you’ve just dropped thousands of dollars on.
That said, the battery design is slim and functional. You can stack up to 32 for a mid-sized system, but there’s no screen or app, so troubleshooting can get confusing fast. We know they cut the screen to keep costs down, but it’s pretty annoying.
Still, the Ruixu Server Rack Battery only costs $1,059, and they say their prices won’t change “period.” Personally, we’d advise you to avoid buying direct from the brand, but if you're okay relying on distributor support (like from Shop Solar) instead of RUiXU themselves, this battery could be a good budget option. Just know what you’re getting into.
Last on our list is the ol’ fashioned Jakiper Server Rack Battery, which we affectionately labeled the caveman of server rack batteries. It’s bulkier, the screen looks like it came off a 2005 Nokia flip phone, and the overall experience feels dated.
You can parallel up to 16 of them, and there are lots of communication ports, but usability is a challenge. Jakiper’s customer service setup is also really strange—it feels like a one-man show. When you call, you get someone’s personal voicemail, which doesn’t inspire much confidence in the brand.
You can get the regular version for $1,099, or a “V1” version for $999 via Shop Solar, though we’re not exactly sure what the difference is.
This is more of a reflection on the brand than these specific batteries, but Jakiper doesn’t seem to be innovating. While companies like EG4 and Rich Solar are moving forward with new features and designs, Jakiper is standing still. That’s rarely a good sign. In our experience, that means a brand’s days are numbered, which isn’t great if you’re looking to spend your money on something that should be a long-term investment, like a battery bank.
The EG4 LL is still the most complete package—but it costs noticeably more now, and that makes the decision less clear-cut. If you want the best experience, it's still worth it.
If you’re trying to save a few hundred bucks, the Rich Solar Alpha 5 Pro is a fantastic second choice with great design and strong support—just a little extra work to set up.
Ruixu is okay if you're comfortable flying solo with tech support and don't mind minimal features. But Jakiper is best left as a last resort—something you buy only if price is your only concern.
From our perspective, if we were just going to pick up a couple of batteries, we’d go premium. However, if you’re going all out and plan on buying 6+ batteries, the savings could add up with one of the cheaper options.
EG4 LL-S Lithium Battery: Check Price at Signature Solar
EG4 LIFEPOWER4 Battery: Check Price at Signature Solar
Use Code: SAVE50THESOLARLAB for $50 Off Your Order
Rich Solar Alpha 5 Server Rack Battery: Check Price at Shop Solar
Use Code: THELAB for 4% Off Your Order
RUiXU 48V Server Rack Battery: Check Price at Shop Solar
Use Code: THELAB for 4% Off Your Order
Jakiper V1 Server Rack Battery: Check Price at Shop Solar
Use Code: THELAB for 4% Off Your Order
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