Best 48V Lithium Battery (Li-ion, LiFePO4)
It’s time for us to present our findings on the Best 48V Lithium Battery in the UK.
LiFePO4 (the now accepted final, extremely safe form of Lithium ion) batteries have rocketed in popularity in the last 3 years or so. That’s because stories are spreading fast about how much better they are than traditional lead-acid batteries. They deliver much more power, last much longer and their power is more sustained and reliable, right up until the battery is nearly fully discharged. And, as we mentioned, they are extremely safe.
Our No.1 is the Kepworth 48V 100Ah battery (see price on Amazon), in second place is the Eco Worthy 24V 100Ah (two, wired in series) and at no.3 is the DC House 48V 50Ah (two, wired in parallel).

Kepworth 48V 100Ah Battery
- Voltage: 48V
- Battery Capacity: 100Ah
- Dimensions: 640 x 245 x 220mm
- Weight: 31kg
We have to say that 48V batteries are not that common; you have a LOT less choice than you do for 12V batteries.
Some of the batteries we’ve seen of this size aren’t the best quality.
But the good news is: there are a few good ones, and even better news: we’ve got the best ones listed here; and who is best suited each one.
Our picks were mainly based on:
- Lithium cell grade and quality
- Manufacturer reputation and manufacturing quality
- Convenience of setup/suitability for a wide variety of uses
- Range and depth of BMS functions (closely related to when the battery was made, and the manufacturer quality).
Finally, we’ll let you know which one is best suited for which application.
48V LiFePO4 Battery Category Winners
- Top Pick: Kepworth 48V
- Value Pick: Eco Worthy 24V x2
- Best for Backup: DC House 48V x2

48V Battery Reviews
Now, let’s check out the best and worst aspects of each battery in detail.
We’ll also look at the merits of each type of system, be in a single battery option, or wiring in series, or wiring in parallel.


Kepworth 48V 100Ah Battery
Pros and who needs this battery:

Highly powerful (by virtue of the impressive continuous power delivery)
150A continuous discharge current is excellent. Several other batteries of this voltage/capacity size (48V 100Ah) have a maximum of just 50A. That’s thanks to the 2C level of continuous discharge current. Kepworth were one of the first onto the market to have the highest quality of Lithium cells. and since then, we’ve become fans of the Kepworth Lithium cells, which have proven the test of time, for power and reliability.

No need for extra wiring
The Kepworth 48V battery is a single battery, entirely on its tod, unlike the other options on this page. That’s beneficial for a few reasons: having no need to buy extra wiring saves on additional expenses to set up your 48V system, the wires inevitably take up some more space

The most space-saving, light option
This single battery will inevitably be lighter than any option that involves multiple batteries. That said, the difference may be relatively small (since a battery with half the power is likely to be approximately half the weight, all other things being equal). However, it’s inevitable that an option involving 2 batteries will take up quite a lot more space and involve additional wiring between them, also adding to the space taken.

The biggest power surge, by far
We’ve discussed their very high continuous discharge current, but the surge power is worthy of its own Pro. An instantaneous maximum of 500A (for 1 second) is simply huge, and the max for 3-5 seconds is 300A. What this translates to for you, when using it is the following: any situation, be it a golf cart that requires big power to get up a steep hill or to accelerate quickly, or a caravan that needs a big jolt of power for a power-hungry piece of electronic equipment, this battery has got it for you. The other 48V options cannot match this for a quick burst of power.
Downsides of this option:

If it fails, you’re without power
There is no backup option in this scenario of using one single 48V battery. If you have a battery bank of 2 x 50Ah 48V batteries (wired in parallel), then you have a backup if one battery fails. (But please note, the same potential for backup does not apply to batteries wired in series).

The included battery charger is on the small side
It’s a 5A charger, and, while it’d be going to far to say it’s unusable, you’d really want a 10A charger for a nice juicy charge profile for a 100Ah battery (charging amps of around 10% of the Ah value is recommended).

The most expensive option
Not too far off a grand. Weigh up this investment and see if it makes sense, compared to the alternative battery bank options, which are cheaper.
Where can you get it?
You can see it on Amazon, right here.


Eco Worthy 24V 100Ah battery x 2 (connected in Series)
Benefits of this 48V battery system:

The best quality LiFePO4 batteries on the market
Put simply, that is what you get with Eco Worthy Lithium batteries. Their Lithium cell quality, build quality are excellent and on top of that, we’ve watched on as Eco Worthy have garnered a reputation for excellent customer service in the last few years. They outstrip Kepworth in that regard entirely. Eco Worthy batteries are now synonymous with quality and longevity, and have a strong ecosystem of related products. See our full review of Eco Worthy Lithium batteries.

Greater flexibility to create a battery bank
You can connect up to 2 of these batteries in series and up to 4 in parallel. That means you can create a maximum 48V 400Ah system, totalling 20,480Wh. That’s pretty huge. This is simply not an option with the Kepworth battery, you are restricted to 48V and 100Ah only. That makes it the most flexible option of our top-ranked battery choices in this review.

Lower cost
It works out over a hundred quid cheaper to get two of these and combine them in series, for a 48V 100Ah battery system.

There is at least some backup potential
If one battery fails you CANNOT still use the other one in this scenario of using 2 x 24V batteries, wired in series, creating a 48V system. Only batteries wired in parallel can still provide the same voltage supply (eg. 2 x 50Ah 48V batteries). However, if there was a scenario where a 24V power system could be used instead, then this option still provides backup potential. However, this would not be the case for a 48V golf cart setup, for example.
Drawbacks:

Lower continuous discharge current than the Kepworth battery
The 100A continuous discharge Amperage is perfectly adequate. But yes, it’s 50 Amps less than the Kepworth battery. Note that the discharge current will be at the level of the weakest battery in the battery bank system, not the strongest. That said, there shouldn’t be a big difference, anyway, since you’ll be using identical batteries, purchased at the same time, right? Well, you should be, anyway (it’s very highly recommended for numerous reasons not to mix and match your Lithium batteries in a battery bank.

The more space-consuming, and heavier option
It works out at around 9kg heavier than the Kepworth battery. And takes up a chunk more space, especially when you consider the wires required.
This battery was at the top of our list of the best 24V100Ah batteries.
Where can you get it?
You can see it at Eco Worthy, right here.


DC House 48V 50Ah LiFePO4 Battery x 2 (connected in Parallel)
Plus points:

It‘s the only option with true 48V backup potential
Since you can wire these batteries in parallel for a 48V battery bank setup, that means you have at least one backup. So, in the case of a 2 x 50Ah 48V battery bank, if one of the batteries fails, then you still have another one able to discharge 48V power.

More flexibility than the single-battery option
You can combine as many as 4 of these in parallel. That would be a 48V 200Ah system, producing a hefty 10,240Wh of power. You don’t get that extension potential with a single-battery option. Another consequence of using this method to build a 10.24Kwh system is that you can use slimmer wires (and therefore cheaper and more flexible and space-saving wires) than you could in a 24V 400Ah system (another way of creating a 10.24kWh system).

DC House batteries are high quality
As a maker, the general standard of all their batteries and related products is high. We rate them just a little below Eco Worthy and a little better than Kepworth. Check out our full review asking “are DC House Lithium batteries any good?”. They have a particularly good quality BMS (Battery Management System) which means very good safety and battery efficiency.

You can use thinner wires
Compared to the Eco Worthy setup, where the batteries are wired in series. That means saving on both cost of purchasing the wires and saving on space. The wires will be more flexible too, and so easier to install in the first place, and to manoeuvre into position when a change is required.
Negative points:

It’s by far the heaviest battery setup
Nearly 53kg in total for the two batteries, in fact. That makes it not far off 20kg heavier than the single Kepworth battery, and around 12kg more weighty than the dual-battery Eco Worthy setup, in second place.

It’s fleixibility and potential for expansion is poorer than the Eco Worthy battery system
As mentioned, you can combine 4 in parallel, making a 10.24kWh system. But Eco Worthy’s battery has potential for a system double that size.
Where can you get it?
You can check it out here, on DC House.
Other options?
There is another way to build a similar system size. This 48V 100Ah system will produce 5120Wh of power. You could also consider a 24V 200Ah system, which produces the same amount of power.
How safe are LiFePO4 batteries?
Read some articles on this site, and elsewhere, and you’ll see that the LiFePO4 batteries are very widely accepted as being very, very safe indeed.
Best 48V Lithium Battery Summary
You’ve just read about the Best 48V Lithium Battery, UK.
The Kepworth 48V LiFePO4 battery (see specifications/price on Amazon) is the exceptional choice, the only single standalone battery that met our standard levels. There are good and bad things about using a single battery for your 48V setup. The main plus point being that it’s the lowest weight and best option for saving space. Kepworth batteries are solid performers in all respects.
The Eco Worthy option (see price/specifications) of two 24V batteries, wired in series has a few things going for it, not least that Eco Worthy have extremely high quality batteries. This would also turn out to be the lowest cost option, even after purchasing the wires required for connection.
DC House 48V 50Ah batteries (see price), wired in parallel, came in third place in our review of these top 48V battery systems. They’re also good quality, if not quite at Eco Worthy standards. And wiring two 48V batteries in parallel means you have the other battery as backup, if the other should fail.