Genuine OEM pick8.8/10
Milwaukee
48-11-1850
A first-party M18 pack with Milwaukee's warranty and the electronics the tools were designed around — the lower-risk default.
$67.99
Independent Cross-Compatibility Reference
Find the battery that actually fits your tools
The cordless battery & charger compatibility lab.
Pick your brand and platform — M18, 20V MAX, ONE+ and more — and see exactly which batteries, chargers, and kits fit, what crosses over, and where aftermarket packs are worth the risk.
Platform fit checks
Genuine vs. aftermarket notes
Live price and stock checks
Buyer guidance only. Always confirm voltage, platform, and connector fit before you buy — battery and charger specs vary by manufacturer and can change without notice.
Platform-Mapped
Batteries & Chargers
OEM vs. 3rd-Party
Risk Flagged
Live
Price & Stock Checked
0
Sponsored Placements
Compatibility Checker
Pick your brand and battery platform. We'll show the batteries, chargers, and kits that fit — plus any cross-fit adapters, with the safety caveats spelled out.
1 · Choose your brand
Editors' Compatibility Shortlist
Four ways to buy without wandering the whole catalog.
Start with the format that matches your routine. The full index is still below, but these are the cleanest entry points for common buyer paths.
Compact & everyday8.4/10
DeWalt
DCB203
A lighter genuine DeWalt pack that makes sense for drills, drivers, and all-day carry rather than heavy-draw tools.
$38.95
High-output pack8.9/10
Milwaukee
Forge HD12.0
Milwaukee's high-capacity FORGE pack for buyers who already know they run grinders, saws, or blowers often.
$213.83
Best all-around8.6/10
DeWalt
DCB205
The mid-capacity 20V MAX workhorse — enough runtime for real work without the weight or price of a big pack.
$61.31
Compatibility Index
All Batterys
Filter by budget and use case, then sort by the spec or ownership factor that matters for your setup.
I need genuine OEM
First-party packs with full warranty and platform-safe electronics, before you spend serious money.
Open pathI mostly need compact everyday
Lighter packs that make more sense for drills, drivers, and all-day carry.
Open pathI need high-output or max runtime
Packs for heavy-draw tools and long sessions between charges.
Open pathI am comparing two options
Put specs, scores, price, and tradeoffs side by side before deciding.
Open pathShowing 21 of 21 mapped batteries.
Genuine OEM
Milwaukee
Forge HD12.0
8.9
Platform
M18
Voltage
18V
Capacity
12Ah
Type
high-output
$213.83
Max Runtime
DeWalt
DCB205CK
8.9
Platform
20V MAX
Voltage
20V MAX
Capacity
5Ah
Type
kit
Genuine OEM
Milwaukee
48-11-1850
8.8
Platform
M18
Voltage
18V
Capacity
5Ah
Type
high-output
$67.99
High-Output & Heavy Tools
Milwaukee
48-59-1850
8.8
Platform
M18
Voltage
18V
Capacity
5Ah
Type
kit
Genuine OEM
DeWalt
DCB609
8.7
Platform
FlexVolt
Voltage
20V/60V MAX
Capacity
9Ah
Type
high-output
$152.49
Cross-Platform
DeWalt
DCB1104
8.7
Platform
12V MAX
Voltage
12V MAX
Capacity
—
Type
charger
$22.97
Genuine OEM
DeWalt
DCB205
8.6
Platform
20V MAX
Voltage
20V MAX
Capacity
5Ah
Type
high-output
$61.31
Cross-Platform
Milwaukee
48-59-1808
8.6
Platform
M18
Voltage
18V
Capacity
—
Type
charger
$54.89
Max Runtime
Ryobi
ONE+ 18V High Performance Starter Kit
8.6
Platform
ONE+ 18V
Voltage
18V
Capacity
—
Type
kit
Genuine OEM
Milwaukee
48-11-2420 / 48-59-2401
8.5
Platform
M12
Voltage
12V MAX
Capacity
2Ah
Type
compact
$59.89
Genuine OEM
Ryobi
PBP005
8.5
Platform
ONE+ 18V
Voltage
18V
Capacity
4Ah
Type
high-output
$54.99
High-Output & Heavy Tools
Ryobi
OP4040 + OP403A
8.5
Platform
40V
Voltage
40V MAX
Capacity
4Ah
Type
kit
$109.96
Genuine OEM
DeWalt
DCB203
8.4
Platform
20V MAX
Voltage
20V MAX
Capacity
2Ah
Type
compact
$38.95
Genuine OEM
Ryobi
40V High Capacity
8.4
Platform
40V
Voltage
40V MAX
Capacity
4Ah
Type
high-output
$104.99
Genuine OEM
DeWalt
DCB122
8.3
Platform
12V MAX
Voltage
12V MAX
Capacity
2Ah
Type
compact
Budget
Milwaukee
48-59-2401
8.3
Platform
M12
Voltage
12V MAX
Capacity
—
Type
charger
Budget
DeWalt
DCB112
8.2
Platform
20V MAX
Voltage
20V MAX
Capacity
—
Type
charger
$22.96
Budget
Ryobi
40V Quick Charger
7.9
Platform
40V
Voltage
40V MAX
Capacity
—
Type
charger
$28.98
Budget
Epowon
Replacement 2-Pack
6.8
Platform
M18
Voltage
18V
Capacity
5Ah
Type
high-output
$57.99
Budget
Generic
FlexVolt Replacement 2-Pack
6.5
Platform
FlexVolt
Voltage
20V/60V MAX
Capacity
9Ah
Type
high-output
$68.39
How the Reference Works
Compatibility-first guidance, honest tradeoffs.
Cordless batteries and chargers are not all interchangeable, even within the same brand. BatteryFits focuses on which packs and chargers actually fit which tool platforms, documented capacity and warranty terms, genuine-OEM-vs-aftermarket risk, and plain-language buyer fit.
1. Map the platform
Confirm which tool platforms (Milwaukee M18, DeWalt 20V MAX, Ryobi ONE+, and others) a battery or charger actually fits, based on published specs and connector compatibility — not guesswork.
2. Check the claims
Separate documented specs from marketing. If a brand does not clearly state voltage, capacity, or warranty terms, the guide says so.
3. Score the buying fit
Rank options by platform fit, genuine-OEM-vs-aftermarket risk, capacity, and live price and availability. The highest-capacity pack can still be the wrong buy for your tool.
No paid rankings
Affiliate links do not buy placement. Guides lead with platform fit and the tradeoffs, not sponsorship.
We don't bench-test cells
We do not claim to have tested or measured battery cells ourselves. Compatibility calls are based on documented specs, connector fit, and manufacturer data — and aftermarket tradeoffs are flagged honestly.
Updated when data changes
New platform releases, pricing, availability, and better-documented alternatives can move a recommendation up or down.
Learn Before You Buy
Buying Guides
Genuine vs Aftermarket Cordless Batteries: The Honest Truth
Aftermarket power-tool batteries cost a fraction of OEM packs — but are they safe? An honest breakdown of warranty, protection circuitry, fire risk, and when a cheaper pack actually makes sense.
Best Milwaukee M18 Batteries (2026): Which Pack Actually Fits Your Tools
Every M18 tool takes every M18 battery, so the real decision is capacity, weight, and whether to go genuine or aftermarket. An honest guide to picking the right M18 pack for how you actually use your tools.
How to Read Cordless Battery Compatibility (So You Don't Buy the Wrong Pack)
Voltage labels are marketing, not a spec you can compare across brands. Here is how to actually read platform names, voltage classes, and connector shapes so you buy a battery that fits your tool.
Best DeWalt 20V MAX Batteries (2026): 20V MAX vs FlexVolt Explained
Every DeWalt 20V MAX tool takes every 20V MAX battery. The real questions are how much capacity you need, whether FlexVolt is worth the upgrade, and genuine versus aftermarket. An honest breakdown.
Stay Independent
New Compatibility Guides, No Fluff
When I publish a new platform compatibility guide, you'll get the fit details, the verdict, and nothing else. No affiliate newsletters. No sponsored roundups.
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