Makita XGT 4Ah Battery Pack: A Higher-Drain Battery Built for Heavy-Duty Tools

Introduction

Makita has quietly introduced a new battery pack for its XGT line, and it is more interesting than a simple capacity bump. The new pack is a 4Ah unit, and it is designed around a specific problem that owners of high-demand XGT tools will recognise immediately: batteries running hot before the tool itself is anywhere near its thermal limit.

There is also a new XGT grinder in the pipeline, and this battery appears to be built to match it. Here is what the pack offers, where it fits, and the one trade-off worth thinking about before you buy.

Why Makita Built This Battery

The clearest way to understand this pack is to look back at the 36V-class dual-battery tools. With two battery packs installed, some users could go through two or even three sets of batteries that overheated before the tool overheated. The thermal load on the packs, not the tool, was the bottleneck.

The 40V XGT chainsaw told a different story. In testing, it could drain an entire 5Ah pack from full to empty before the tool hit its thermal limit. That is exactly the kind of behaviour Makita appears to want to extend across the line, and this new 4Ah pack looks like the enabling piece.

Drain Rate and Cell Design

On paper, the new pack reads 4Ah on the rear label, with a discharge rating of 2.1kW, which is essentially the same drain level as the existing 5Ah pack. That is the headline: same capacity class as a standard 4Ah, but with a much higher sustained drain.

Under the housing, the pack uses 21700-format cells, though they appear to be an upgraded variant of the cells used in the 5Ah and 8Ah packs. No pouch cells are visible here; so far, pouch-cell construction in cordless tool batteries remains the territory of DeWalt and Flex, and it will be interesting to see whether Makita or Milwaukee gets there next.

Paired With High-Demand Tools

The timing is not a coincidence. A new XGT grinder is launching alongside, and the battery looks sized to support it. There is also a reasonable chance this pack ships in kits with smaller high-demand tools, with top-handle chainsaw kits being an obvious candidate.

The new grinder also carries a high dust and water ingress protection rating, which is notable in its own right. As far as we are aware, no other brand currently offers a grinder with that level of ingress protection, so Makita is clearly pushing the platform forward on durability as well as power.

Things to Consider Before Buying

The main question is value. If the drain and drop-off behaviour of this pack is similar to the 5Ah, some buyers may wonder whether it is simply better to buy the 5Ah instead and accept the extra weight and size in exchange for an additional amp hour of runtime.

Current pricing gives that debate real weight: the standard 4Ah pack sits around $200, the 5Ah around $300, and the new pack is expected to land somewhere in the region of $250. If the difference between the new pack and the 5Ah comes down mostly to weight and size, that $50 gap becomes a personal judgement call.

Buying Advice

Buy this pack if you run high-demand XGT tools, such as the 40V chainsaw or the new grinder, and you want battery thermals that keep up with the tool instead of cutting runs short. Its higher drain rating at 4Ah capacity is genuinely useful in those scenarios.

If your work is dominated by runtime rather than peak demand, the existing 5Ah pack remains the safer pick, especially while the new pack’s exact street price is still settling.

Conclusion

Makita’s new XGT 4Ah battery pack is a focused product: 21700 cells in an upgraded form, a 2.1kW drain rating, and a clear mission of matching heavy-duty tools like the new ingress-protected grinder. It is not a capacity revolution, but it is a thermal solution to a real problem, and for owners of demanding XGT tools, that may be exactly what was needed.