Greenworks ISG402 24V 1950 in-lbs Brushless Impact Driver Kit: problems, parts and running costs
Checked: 2026-10-18
Summary
The one independent test, Pro Tool Reviews in 2022, found the ISG402 slower than prosumer tools on heavy structural screws and noted a grip that favors larger hands; no owner failure data exists for this model. Running costs are limited to 2.0Ah batteries, a charger and driver bits, with no replacement prices captured. At its $97.49 direct sale price (compare-at $129.99) it is a solid homeowner buy below $100, fair at $100-120 and weak above $130.
Common problems and fixes
- Kit contents vary by listing — some ISG402 kits ship with USB-C batteries and a 65W USB-C fast charger, others with a standard charger; verify which configuration the listing is for before buying. [5][1]
- Torque figure is not independently verified — the 1,950 in-lbs maximum is manufacturer-rated; no independent torque measurement was found. [1][2]
- No service or internal parts information — no replacement collet, motor or electronics parts are published for this model on the Greenworks US site; the 3-year limited warranty is the main safety net, and it is not transferable and requires the original purchase receipt. [1][6]
Parts and consumables
Yearly running cost
There is no proprietary accessory lock-in beyond the 24V battery platform. [1]
When it is a good buy
- $97.49 direct sale from Greenworks US (October 2026, compare-at $129.99): strong for a homeowner who wants a compact impact driver and values a battery platform shared across 200+ tools. [1]
- $100-120: fair — compare the newer ISD401, rated 2,650 in-lbs and listed at $69.99, which offers more torque for less money. [3][4]
- $130+: weak next to the ISD401 and prosumer 20V/18V platforms (DeWalt, Milwaukee, Makita) with deeper service networks. [2]
- Alternative: the ISD401 is the better choice when raw torque per dollar matters more than the ISG402’s 5-inch compact length. [3][2]