REF GEARGUIDERS · REV 2026 · SHEET 1 of 1Workshop Manual · Issue № 042
FIELD MANUAL № 042
Decode LED codes,tool errors — fast. That blinking red light has a meaning. Every charger pattern, every fault code, every chuck and blade quirk — mapped to the actual model in your hand, by the people who've already taken the tool apart.
— Battery won't charge? Decode the charger LED pattern in 30 seconds. — DeWalt, Milwaukee, Makita, Ryobi, Ridgid, Bosch — platform-specific fixes. — Mowers, chainsaws, and pressure washers that won't start. Independent · reader-supported · honest fixes. Some guides use affiliate links; we only recommend gear that genuinely works.
DIAGNOSTIC · DEWALT DCB115 ● ● ● ● SOLID RED → Pack too hot — let cool 30 min ● ○ ● ○ FLASHING → Cell imbalance — try a known-good pack ● ● ○ ○ RED + GREEN → Charger fault — service required ○ ○ ○ ○ DARK → No power — check outlet, then cord REAL CODES № 01 LEAD MANUAL DeWalt · Grinders & Sanders Cordless Angle Grinders: DeWalt and Milwaukee vs the 19,500 RPM Mini Grinders DeWalt DCG413B and DCG410B against Milwaukee M18 FUEL 2880-20 and 2888-20, from the manufacturers' own pages, and what the 3-inch "19,500 RPM" mini grinders are and aren't. Switch types, brakes and what to check first.
2026-10-07 · 12 min on the bench
№ 02 DeWalt · Impact Wrenches Cordless Impact Wrenches: DeWalt vs Milwaukee, and Why the Torque Labels Differ 2026-10-07 · 6 min
№ 03 other · Outdoor Power Equipment Cordless Leaf Blowers: "990,000 RPM" Brands vs DeWalt and EGO, and What the Specs Say 2026-10-07 · 6 min
№ 04 DeWalt · Saws Which Cordless Saw First? Circular, Jig or Reciprocating, DeWalt and Milwaukee 2026-10-07 · 6 min
№ 05 DeWalt · Batteries & Chargers Aftermarket Batteries for DeWalt 20V MAX: How to Read the Capacity Claims 2026-10-06 · 6 min
PLATFORMS № 02
by the platform Cross-brand troubleshooting, platform-aware. Find the manual that matches the battery in your hand.
Buying guides and tools Shopping for a battery, charger or tool? These guides use each manufacturer's own pages and say what we couldn't verify.
Battery compatibility checker Pick a brand and tool to see which battery platforms and models fit.
Charger light-code decoder Pick your charger and its lights to get the manual's meaning and next step.
Repair or replace calculator Enter your own costs and the tool's age to see whether to fix it or buy new.
Drill and impact driver combo kits compared DeWalt, Craftsman, Milwaukee and Makita kits, from the manufacturers' own pages.
DeWalt vs Milwaukee impact drivers DCF845, DCF860, DCF870 and Milwaukee 2953-20, torque shown as each brand labels it.
Which DeWalt charger do you need? DCB1104, DCB1112, DCB1404 and DCB118: which packs each one charges.
Genuine vs third-party Milwaukee M18 batteries What Milwaukee says and what to check on a third-party pack.
Aftermarket batteries for DeWalt 20V MAX How to read 8Ah and 12Ah capacity claims.
Replacement batteries for Ryobi 18V ONE+ Genuine vs aftermarket 8Ah packs.
Replacement batteries for Ryobi 40V Genuine vs aftermarket 7.5Ah listings.
Off-brand tools on DeWalt and Milwaukee batteries What to check before you order.
Cheap 20V drill sets: what to check AVID POWER, DEKOPRO, COMOWARE and PULITUO'S against named brands.
Tool storage for a cordless kit TSTAK, Craftsman, Keter and parts cabinets, with manufacturer dimensions.
Wet/dry shop vacs for a garage What peak HP does and doesn't tell you.
DeWalt vs Milwaukee impact wrenches Why the torque labels differ, and what each maker prints.
Cordless angle grinders compared DeWalt and Milwaukee vs the 19,500 RPM mini grinders.
Which cordless saw first? Circular, jig or reciprocating, from the manufacturers' own pages.
Cordless leaf blowers: what the specs say CFM and MPH vs the 990,000 RPM claims.
TEAR-DOWN № 04
what's actually inside Most "battery dead" calls aren't dead cells. Once you know which part of the pack is which, you stop guessing.
Fig. № 042 · Pack anatomy Ref · 20V MAX class · 5S1P / 5S2P Sheet · 1 of 1
18650 18650 18650 18650 18650 press · 2s balance & cut-off 1 2 3 4 5 6 drawn on the bench · 2026 ANATOMY № 01 1 Latch tab
Squeeze to release. Worn springs cause pack drop-out under recoil.
2 Contact rail
Power + comm to the tool. Clean with a pencil eraser — never sandpaper.
3 Fuel-gauge LEDs
4 dots, ~25% per dot. Hold the button for 2s to read state of charge.
4 Cell pack — 5× 18650
5 cells in series. 18.0 V nominal, 20 V peak. The "20V MAX" you see in the catalog.
5 BMS / balance board
Cuts at 2.5 V/cell. "Pack dead" usually means the BMS locked out, not that the cells are gone.
6 Thermistor
Kills charging above ~70 °C. Hot pack? Wait 30 min — don't force the charger.
MANUALS № 03
pick the symptom Jump straight into the issues tradespeople and DIYers run into most — battery faults, chuck problems, blade wobble, and OPE starting issues.
№ 01 41 guides Batteries & Chargers Battery faults, charger LED codes, platform compatibility, runtime issues, and safe storage for every major cordless ecosystem.
№ 02 4 guides Drills & Drivers Hammer drills, impact drivers, and drill-drivers — chuck wobble, clutch slip, trigger faults, and bit-retention issues.
№ 03 4 guides Saws Circular, miter, table, jigsaw, track, and reciprocating saws — blade wobble, alignment, kickback, and motor faults.
№ 04 1 guides Grinders & Sanders Angle grinders, random-orbit sanders, belt sanders, and polishers — RCD tripping, disc wobble, pad issues, and bearing wear.
№ 05 17 guides Outdoor Power Equipment Battery and gas lawn mowers, string trimmers, leaf blowers, edgers, pressure washers, snowblowers, and generators.
№ 06 3 guides Chainsaws Battery and gas chainsaws — chain tension, bar wear, carburetor tuning, and starter-rope issues. Step-by-step checks in the order that finds the fault fastest.
Platforms / On the bench
4
Dewalt · Milwaukee · Makita · Ryobi
Manuals / Filed to date
24
Each one tied to a specific model, charger, or fault code — not generic advice.
Last bench update
Oct 7
Cordless Angle Grinders — filed Mon 06:00 UTC.
