Gemho 3.5Ah Replacement Battery for Shark XBATR725EU (25.2V Lithium-Ion) for IZ300UK and IZ320UK cordless vacuums

What this replacement battery is for

If your Shark cordless stick vacuum is losing power too quickly, a replacement battery can be the most straightforward way to get performance back without replacing the whole cleaner. This Gemho 3.5Ah replacement battery is made for the Shark battery code XBATR725EU, and it’s described as compatible with specific Shark cordless models including IZ300UK, IZ300UKT, IZ300UKTDB, IZ320UK and IZ320UKT.

On paper, it’s positioned as a direct swap: the battery is intended to fit and be easy to install, and it includes an LED indicator so you can check remaining power while you’re working.

The essentials (what you’ll notice day to day)

The headline spec here is a lithium-ion pack rated at 25.2V with a capacity listed as 3500mAh / 3.5Ah. In practical terms, that’s the kind of upgrade that matters when you keep running into “just one more room” problems. If your current battery cuts out early, having a higher-capacity replacement can help you get through a full house clean more comfortably.

It also mentions safety-focused compliance (CE, FCC, ROHS certified standards) and that the lithium electronics are designed to provide broader protection. That’s the sort of reassurance many people look for with replacement power cells—no one wants to worry about overheating or reliability.

Worth noting: the listing doesn’t describe battery life in minutes/charges, so you’ll want to think of this as “replacement with stated capacity”, not as a guaranteed run-time improvement in every household.

Compatibility: the bit you should double-check

This battery is specifically described as a replacement for Shark XBATR725 (XBATR725EU) and compatible with the IZ300UK / IZ300UKT / IZ300UKTDB / IZ320UK / IZ320UKT cordless stick vacuum models.

It’s not the kind of accessory you want to guess on. Before buying, check that your vacuum battery marking matches XBATR725EU (or the XBATR725 series as stated) and that your model number is one of those listed. If your model isn’t included, it may not fit as claimed.

How installation and charging are expected to work

The listing claims the battery is easy to install and fits perfectly, plus it includes an LED indicator to show remaining power while using. That’s a useful detail for everyday cleaning because it reduces the “mystery battery fade” mid-job.

In a typical use scenario, you’d attach the replacement battery, then as you vacuum, glance at the LED indicator to judge when you’ll need a recharge—particularly helpful if you’re doing stairs, hallways, or rooms in one go.

On the charging side, it’s described as charging faster, but there are no charge-time figures provided. If fast charging is a deal-breaker for you, you may want to verify expectations based on your charger setup rather than relying solely on that claim.

What stands out, and where it might not be enough

What stands out - Direct replacement approach for Shark XBATR725EU battery code, with stated compatibility for specific IZ models. - LED indicator for checking remaining power during use. - Safety/compliance claims (CE, FCC, ROHS) and protective electronics mentioned. - Capacity listed as 3.5Ah / 3500mAh alongside 25.2V.

Where it may fall short - No detailed run-time comparison is provided, so real-world battery life may vary based on how you clean (floor type, suction settings, how long you use it). - If your vacuum model isn’t one of the listed compatible ones, don’t assume it will work.

Who it’s for (and who should skip it)

It makes sense if you already own a compatible Shark IZ300UK/IZ320UK cordless stick vacuum and you’re mainly dealing with battery fade or shorter cleaning sessions than you’re used to. This is also a sensible choice for buyers who want a replacement battery with some safety/compliance reassurance and an LED power indicator.

It may not suit you if: - Your vacuum model isn’t among those listed. - You’re expecting precise, guaranteed run-time improvements in minutes (the listing doesn’t offer that level of detail). - You’re considering this without checking the battery code on your current pack.

Final verdict

This Gemho 3.5Ah replacement battery looks like a practical “get your cordless back in rhythm” buy for owners of the specified Shark IZ300UK and IZ320UK models. The combination of 25.2V lithium-ion, a stated 3.5Ah capacity, compatibility with XBATR725EU, and an LED indicator makes it easy to justify as a like-for-like replacement.

Just be careful on compatibility: confirm the XBATR725EU code and your model number before you order. If those match, it’s a strong candidate for restoring daily cleaning without changing your vacuum. If they don’t, you may end up with a battery that doesn’t fit or isn’t what you need.

Mini FAQ

Is this battery compatible with all Shark cordless vacuums? No. The listing only names compatibility for specific IZ300UK/IZ320UK model numbers and the XBATR725EU battery code.

Does it show battery level while you’re using the vacuum? Yes, the listing mentions an LED indicator that shows remaining power while in use.

What voltage and capacity does it have? It’s listed as a 25.2V lithium-ion battery with a capacity of 3500mAh / 3.5Ah.

Does it come with a warranty or money-back cover? The listing states a 12 months warranty and a 30 days refund, along with 24 hours response service.

Buying verdict

If you’ve got a compatible Shark IZ model and your XBATR725EU battery is the limiting factor, this is the sort of replacement battery worth considering for day-to-day cleaning—especially because of the LED indicator and the stated 3.5Ah capacity. Just don’t rely on general “Shark compatibility”, check the model and battery code first.