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Wadfow WLM1528 rotary hammer review: 4.5J on 20V

Reviewed by Gabriel Manalo · Updated Aug 16, 2026 · How we review

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Quick verdict

4.5 J and 28 mm in concrete on the mainstream 20V platform, matching the 42V tool here without a niche battery, but the listing leaves inclusions unstated.

At a glance

BrandWadfow
TypeCordless rotary hammer
Price₱9,100 (as of Aug 16, 2026)
Owner rating5.0 ★ from 5 reviews
ShopWADFOW
Units sold8

Specifications

Specs per Wadfow published data for the WLM1528

TypeCordless rotary hammer
ModelWLM1528 (P20S platform)
ChuckSDS Plus
Battery20 V
MotorBrushless
Impact energy4.5 J
No-load speed0-930 rpm
Impact rate0-4400 bpm
Max drilling concrete28 mm
Max drilling steel13 mm
Max drilling wood40 mm

Pros and cons

✓ Pros

  • 4.5 J on a mainstream 20V platform, the same impact energy as the 42V tool here without a niche battery
  • 28 mm concrete capacity covers anchor bolts and small dowels cordlessly
  • Brushless motor with no carbon brushes to replace
  • Runs on the Wadfow P20S battery system, shared across their drills, grinders and drivers
  • 930 rpm with 4400 bpm is a sensible pairing for a hammer this powerful

✗ Cons

  • Battery and charger inclusions are not stated on the listing, so confirm before buying
  • Delivers 4.5 J and 28 mm where a corded 1500 W hammer at a lower price reaches 5.5 J and 32 mm
  • 930 rpm makes it slow for ordinary drilling in wood or steel
  • Weight and number of modes are not published

The Wadfow WLM1528 delivers 4.5 J and 28 mm in concrete on the mainstream 20V P20S platform, for around ₱9,100.

How much hammer is it?

20V brushless, 4.5 J, 0-930 rpm, 0-4400 bpm, drilling to 28 mm in concrete, 13 mm in steel, and 40 mm in wood through an SDS Plus chuck.

That 4.5 J places it between the corded 800 W and 1500 W classes, which is strong for a cordless tool. In practice it means anchor bolts and small dowels are within reach with no cord to trail up a ladder.

The point worth making is the platform. It matches the 42V tool in this category on impact energy and concrete capacity exactly, while running on the far more widely stocked 20V line, shared with Wadfow drills, grinders, and drivers. Higher pack voltage does not automatically buy more hitting power, and these two tools are the proof.

930 rpm is low, as it is on every high-energy hammer, so this is not a general-purpose drill.

What the listing does not say

Two gaps worth clearing up with the seller before buying.

Whether a battery and charger are included. Wadfow sells this model both bare and as a kit, and the listing does not specify. On a cordless tool that is the single biggest variable in the real price.

Weight and the number of modes are also unpublished, so whether it chisels cannot be confirmed from the data sheet.

Is it sulit?

Around ₱9,100 as of August 16, 2026. Check the latest price on Shopee.

This is the difficulty. At this price a corded 1500 W hammer delivers 5.5 J and 32 mm for a fraction of the money, and the 20V combo kit elsewhere in this category delivers the same 4.5 J and 28 mm with two 4.0 Ah batteries and a charger included for considerably less.

The tool itself is well specified and the platform choice is the right one. The pricing is what makes it hard to recommend over its direct rivals.

Who should buy it

Buy this if you are already on the Wadfow P20S platform and want the most capable hammer on it. Otherwise compare it carefully against cheaper 20V kits first. See how it ranks in our best rotary hammers in the Philippines roundup, or browse more on our Home Improvement page. Our rotary hammer buying guide covers corded against cordless.

Alternatives to consider

The INGCO 20V combo kit matches its 4.5 J and 28 mm and includes two 4.0 Ah batteries and a charger for around half the price. If you can accept a cord, the Tolsen 88531 delivers 5.5 J and 32 mm for far less again.

Frequently Asked Questions

Does it come with a battery and charger?

The listing does not say, which is the main thing to clear up before buying. Wadfow sells this model both bare and as a kit. Ask the seller directly, because a 20V battery and charger change the real cost substantially.

How does 4.5 J compare to corded tools?

It sits between the corded 800 W class at 2.5 J and the 1500 W class at 5.5 J. That is genuinely strong for a cordless tool, and the 28 mm concrete capacity covers anchor bolts and small dowels. Sustained chiselling is still where a cord wins.

Is the P20S platform widely available?

Yes. Wadfow P20S is a mainstream 20V line sold across Philippine hardware retailers and shared with their drills, grinders, and drivers. That is a meaningful advantage over the 42V platform, where the tool range is much narrower.

Why is the no-load speed only 930 rpm?

Because high impact energy and high rotation speed together destroy SDS Plus bits, so manufacturers pair 4.5 J with a lower rpm deliberately. The practical effect is that it drills concrete well and timber slowly. Keep an ordinary drill for general work.

Still deciding?

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