Quick verdict
Buy DeWalt FlexVolt if you’re already on 18V XR and want to add heavy-duty capability without starting a second battery system from scratch — FlexVolt batteries work in both. Buy Makita XGT if you’re starting fresh or already run LXT and want the newer, purpose-built 40V platform with the higher performance ceiling. Both are genuinely capable of table saws, large grinders and SDS-max breaking; the deciding factor for most buyers is which 18V platform they’re already invested in.
Specs and platform at a glance
FlexVolt batteries automatically switch between 18V and 54V depending on which tool they’re slotted into, so the same battery covers both DeWalt’s standard XR range and its heaviest FlexVolt-only tools. XGT is a separate 40V Max system from Makita with its own dedicated battery line — it doesn’t share batteries with LXT at all, so buying into XGT means running a second battery platform alongside any existing LXT kit.
What DeWalt FlexVolt is really like
FlexVolt tools cover the genuinely heavy end of DeWalt’s range — table saws, large circular and plunge saws, SDS-max breakers and high-output grinders — all running on the same batteries as the 18V XR tools already on most DeWalt vans. A genuine current FlexVolt tool is the DCS389X2, a 54V reciprocating saw with 2×9.0Ah batteries, charger and TSTAK case.
What Makita XGT is really like
XGT is Makita’s dedicated 40V Max platform, built specifically for the heaviest categories — rotary hammers, large grinders, chainsaws, mitre saws and breakers that would be underpowered on LXT’s 18V. Because it’s a separate system, buying in means a second set of batteries and a second charger alongside any existing LXT kit. A genuine current XGT starter is the DK0176G205 2-piece brushless combo kit in a Makpac case.
Batteries, chargers and the real running cost
FlexVolt’s dual-voltage batteries are the cheaper route into heavy-duty power if you already own 18V XR tools, since the same batteries do both jobs — no second charger or battery set to buy. XGT batteries and chargers are an additional cost on top of any existing LXT kit, since the two Makita platforms don’t share anything. Bare tool prices at the heavy end are broadly comparable between the two brands once battery capacity is matched.
Which should you buy?
Buy DeWalt FlexVolt if…
you’re already running 18V XR tools and want heavy-duty capability without a second battery platform, or you want the flexibility of batteries that work across both your everyday and your heaviest tools.
Buy Makita XGT if…
you’re starting from nothing and want the newer, purpose-built platform with the highest performance ceiling, or you’re already committed to Makita and don’t mind running LXT and XGT as two separate systems.
Consider staying on twin-18V if…
your heaviest current job doesn’t actually need 36V+ power — a pair of standard 18V batteries in a compatible tool covers more heavy-duty use cases than people expect, and neither FlexVolt nor XGT is worth the extra cost if you rarely hit their genuine use case.
Frequently asked questions
Do FlexVolt batteries work in standard 18V DeWalt tools?
Yes — that’s the whole point of FlexVolt; the battery automatically runs at 18V in standard XR tools and steps up to 54V in FlexVolt-specific tools.
Do XGT batteries work in Makita LXT tools?
No — XGT is a completely separate 40V Max platform with its own battery mount; it does not share batteries with LXT.
Is FlexVolt or XGT better for a table saw?
Both brands offer genuinely capable cordless table saws on their respective heavy platforms — the deciding factor is usually which platform’s batteries you already own, not a meaningful performance gap between the two.
Are FlexVolt and XGT tools more expensive than standard 18V tools?
Yes, noticeably — both the tools and the higher-capacity batteries they require carry a real premium over standard 18V equivalents, reflecting the extra power on tap.
Can I buy FlexVolt or XGT tools as bare units if I already have batteries?
Yes — both brands sell the majority of their heavy-duty tools as body-only options for anyone already holding compatible batteries and a charger.
Final word
Neither platform is a wrong choice at the heavy end — both genuinely deliver the performance their marketing promises. The practical decision for most UK trades comes down to which 18V platform you’re already running: FlexVolt if it’s DeWalt XR, XGT if you’re happy running a dedicated second system alongside LXT (or starting completely fresh). Buy for the specific heavy jobs you actually do regularly, not for the spec sheet alone.
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