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DeWalt DCB2108 20V MAX XR 8 Ah Battery vs DEWALT DCB205-2C 20V MAX Battery Kit

Buy the DCB2108 8 Ah POWERPACK if you run high-draw tools like a circular saw, grinder or blower and want one battery that lasts a long shift. Buy the DCB205-2C kit if you are building out a 20V MAX system from scratch or want two batteries plus a charger to keep tools running back to back. The 8 Ah uses tabless cell technology and runs cooler under load, while the two 5 Ah packs together give more total capacity and redundancy. Owners rate both 4.6, but the 2-pack kit has far more ratings behind it.

  • Choose the DeWalt DCB2108 POWERPACK if you already own 20V MAX chargers and want maximum runtime and cooler running in one heavy-duty battery.
  • Choose the DeWalt DCB205-2C kit if you need two batteries and a charger in one go, or you are starting a 20V MAX collection.

Prices

  • DeWalt DCB2108 20V MAX XR 8 Ah Battery: $100.00 at eBay (checked today)
  • DEWALT DCB205-2C 20V MAX Battery Kit: $114.99 at Amazon (checked today)
  • Difference: the DeWalt DCB2108 20V MAX XR 8 Ah Battery is $14.99 cheaper than the DEWALT DCB205-2C 20V MAX Battery Kit today
DEWALT
DeWalt DCB2108 20V MAX XR POWERPACK 8 Ah Battery

DeWalt DCB2108 20V MAX XR 8 Ah Battery

DeWalt DCB2108 20V MAX XR POWERPACK 8 Ah Battery

4.6(57 ratings)
$100.00at eBayVerified
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Pros
  • 8 Ah gives the longest runtime in the 20V MAX line
  • Tabless cells run cooler under heavy load
  • About 60-minute charge time
  • State-of-charge LED indicator
  • Fits every 20V MAX tool and charger
Cons
  • No charger in the box
  • Heavier at 2.2 lb, which shifts tool balance
  • Only one battery, so no backup
  • Costs more than a single 5 Ah pack
DEWALT
DEWALT 20V MAX Lithium-Ion Battery 2-Pack and Charger, 5.0 Ah, Battery Starter Kit DCB205-2c

DEWALT DCB205-2C 20V MAX Battery Kit

DEWALT 20V MAX Lithium-Ion Battery 2-Pack and Charger, 5.0 Ah, Battery Starter Kit DCB205-2c

4.6(575 ratings)
$114.99at AmazonObserved at 7:54 PM
See all prices and details
Visit Amazon

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Pros
  • Two batteries and a charger in one kit
  • Charger also handles 12V and 60V MAX packs
  • Lighter 1.4 lb packs are easier on tools
  • 10 Ah combined capacity across the pair
  • Large review base with strong ratings
Cons
  • 5 Ah packs sag sooner in high-draw tools
  • 90-minute charge time per battery
  • Some owners report packs that will not charge
  • No written warranty listed

What separates them

DeWalt DCB2108 20V MAX XR 8 Ah BatteryDEWALT DCB205-2C 20V MAX Battery Kit
Capacity per battery8 Ah in a single pack5 Ah per battery, two included
Total capacity in the box8 Ah total10 Ah total across two packs
Charger includedNo, battery onlyYes, a 4 amp charger that handles 12V, 20V and 60V MAX packs
Cell designTabless cells, built to run cooler and resist heat buildupStandard XR cylindrical cells
Weight per battery2.2 lb1.4 lb
Charge timeAbout 60 minutesAbout 90 minutes per battery
RedundancyOne battery, so a dead pack stops workTwo packs, swap and keep going
Owner feedback4.6 from 57 ratings4.6 from 575 ratings, some complaints about packs not charging

Price history

$130.00$110.00
Oct 30Nov 9
  • DeWalt DCB2108 20V MAX XR 8 Ah Battery: lowest $114.99 on Nov 9 at Amazon.
  • DEWALT DCB205-2C 20V MAX Battery Kit: lowest $110.00 on Oct 31 at eBay; $114.99 on Nov 9.

Prices at every store

DeWalt DCB2108 20V MAX XR 8 Ah Battery

  • WalmartNew

    In stockSold by SourcedCommerceReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.

    $116.99Free shippingVerified
    Visit Walmart
  • Tool NutNew

    In stockReturn policy

    $169.00Verified
    Visit Tool Nut
  • eBayNew

    Availability unknownSold by palmou1983 (100% positive, 197 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.

    $100.00+ $8.71 shippingVerified
    Visit eBay
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $114.99Free shippingObserved at 7:54 PM
    Visit Amazon

Also available at

  • Tool NutCheck price at Tool Nut
  • WalmartCheck price at Walmart
  • Tool Pass ProCheck price at Tool Pass Pro

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All 16 stores and price history →

DEWALT DCB205-2C 20V MAX Battery Kit

  • Fasteners IncNew

    In stockReturn policy

    $119.00Verified
    Visit Fasteners Inc
  • Fasteners Tool OutletNew

    In stock

    $119.00Observed Nov 8, 2026, 1:22 AM
    Visit Fasteners Tool Outlet
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $114.99Free shippingObserved at 7:54 PM
    Visit Amazon
  • eBayNew

    Availability unknownSold by sunshinetooldepo

    $129.95Observed Nov 8, 2026, 1:22 AM
    Visit eBay

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All 26 stores and price history →

Specs compared

SpecDeWalt DCB2108 20V MAX XR 8 Ah BatteryDEWALT DCB205-2C 20V MAX Battery Kit
ModelDCB2108Dcb205-2C
Power SourceCordlessBattery
Battery Voltage20V20 V
Battery TypeLithium-Ion20V MAX*
Battery Capacity8 Ah5 Ah
Weight2.2 lb (individual battery)1.4 lb
ColorYellowYellow
ConditionNew—
Power Voltage20V—
Number Of Batteries Included1—
Battery Charge Time60 minutes—
Battery Run TimeLonger without fear of overheating, Increased e…—
Show all 40 specsShow fewer specs
SpecDeWalt DCB2108 20V MAX XR 8 Ah BatteryDEWALT DCB205-2C 20V MAX Battery Kit
Height5 in—
Length5.875 in—
Width3.375 in—
Tool TypePower Tool Battery—
Tool SubtypeBatteries—
Tool SeriesDEWALT XR—
Safety HighlightsMitigates heat buildup, Endure potential impact…—
Battery System CompatibilityDeWalt 20V MAX—
Compatible Charger20V MAX chargers—
Tool System Compatibility

What reviewers say

DeWalt DCB2108 20V MAX XR 8 Ah Battery

  • 4.6 / 557 ratings

Rated 4.6 out of 5 from 57 ratings, the DCB2108 is well regarded for runtime and power in demanding tools. Owners treat it as a step up from older 5 Ah packs.

What people mention
  • RuntimePraisedOwners say the 8 Ah capacity keeps high-draw tools running far longer between swaps.
  • PowerPraisedReviewers report more torque and less bogging than with older 5 Ah packs.
  • WeightMixedThe extra capacity adds bulk, which some users notice in overhead or one-handed work.
  • BuildPraisedThe overmolded base and cells are described as surviving drops and job-site abuse.

DEWALT DCB205-2C 20V MAX Battery Kit

  • 4.6 / 5575 ratings

Rated 4.6 out of 5 from 575 ratings. Buyers mostly call the packs good quality at a fair price and say they work great; a minority report batteries that will not charge.

What people mention
  • ValuePraisedBuyers call it good quality at a fair price.
  • PerformancePraisedOwners say the packs work great in their tools.
  • ChargingCriticisedSome buyers report batteries that will not charge.

Questions and answers

Which is better for a circular saw or grinder?
The DCB2108 8 Ah. Its higher capacity and tabless cells hold voltage better under continuous high draw, so the tool keeps its speed longer. The 5 Ah packs work but fade sooner in heavy cuts.
Which lasts longer over the years?
The 8 Ah POWERPACK is built for more charge cycles and cooler running, which usually means a longer service life. The 5 Ah packs are proven but more sensitive to heat in high-draw use.
Is the 8 Ah worth stepping up to if I already have 5 Ah packs?
Yes if you run saws, grinders or blowers and want fewer battery swaps. If your tools are drills and drivers, the two 5 Ah packs cover more ground for the same money.
Do both work with all my DeWalt 20V MAX tools?
Yes. Both are 20V MAX and fit the full line of 20V MAX tools and chargers. The kit's charger also tops up 12V and 60V MAX packs.
Can I use the 8 Ah battery with the charger from the kit?
Yes. The DCB1104 charger in the kit charges 20V MAX packs, including the 8 Ah. Expect a longer charge on the bigger pack than the 5 Ah.
Which is better for a homeowner with a few tools?
The DCB205-2C kit. Two batteries plus a charger gets a small collection running, and the lighter packs suit drills and drivers fine.

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More comparisons

  • DeWalt 20V MAX Lithium-Ion 5.0Ah Battery Pack (DCB205) vs DEWALT 20V MAX Lithium-Ion Battery 2-Pack and Charger, 5.0 Ah, Battery Starter Kit DCB205-2c
  • DeWalt DCB2108 20V MAX XR POWERPACK 8 Ah Battery vs DEWALT 20V MAX XR Premium Lithium-Ion 4.0Ah Battery Pack
  • DEWALT 20V MAX Lithium-Ion Battery 2-Pack and Charger, 5.0 Ah, Battery Starter Kit DCB205-2c vs DEWALT POWERSTACK 5.0 Ah Battery
  • DEWALT 20V MAX Battery XR POWERPACK 4Ah Lithium Ion Battery (DCB2104) vs DeWalt DCB2108 20V MAX XR POWERPACK 8 Ah Battery
  • DeWalt 20V MAX Lithium-Ion 5.0Ah Battery Pack (DCB205) vs DeWalt DCB2108 20V MAX XR POWERPACK 8 Ah Battery
  • Dewalt DCB201 20V 1.5Ah Max Lithium-Ion Battery Pack (2-Pack) vs DEWALT 20V MAX Lithium-Ion Battery 2-Pack and Charger, 5.0 Ah, Battery Starter Kit DCB205-2c
  • DeWALT 20V MAX 5.0Ah Battery, 2-Pack (PROMO DCB205-2) vs DEWALT 20V MAX Lithium-Ion Battery 2-Pack and Charger, 5.0 Ah, Battery Starter Kit DCB205-2c

Buying guides that pick them

  • Best DeWalt 20V MAX lithium-ion battery packs
DeWalt XR
—
Compatible Tools20V MAX tools—
Included AccessoriesCharger Not Included—
Design HighlightsLED indicator, Overmolded base—
MaterialOvermolded base—
size—One Size
Volts—20 Volts
Compatibility—DEWALT
Brand—DEWALT
Works with—12-Volt,20-Volt And 60-Volt Dewalt Max Batteries
Count per pack—2
Piece count—2
Count—2
Accessories—Charger
Has written warranty—No
Has nrtl listing certification—N
Retail packaging—Kit
Charge Time—90 min
Fuel Gauge—Yes