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Hercules 20V 5Ah Battery 2-Pack vs Hercules 20V 12Ah Battery

Buy the 12Ah single battery if you need long runtime from one pack and already own Hercules 20V tools. Buy the 5Ah two-pack if you want two lighter packs to spread across tools or keep one charging while the other works. Both are UL-listed 20V lithium-ion packs in the same Hercules platform, so tool compatibility is identical. The 12Ah carries more than double the capacity of one 5Ah pack in a body that weighs about the same, but the two-pack gives you redundancy and easier handling.

  • Choose the Hercules 5Ah two-pack if you want two lighter batteries to rotate between tools or share across a kit.
  • Choose the Hercules 12Ah if you want maximum runtime from a single pack for high-draw tools like saws and grinders.

Prices

  • Hercules 20V 5Ah Battery 2-Pack: $64.99 at eBay (checked today)
  • Hercules 20V 12Ah Battery: $134.99 at Harbor Freight Tools (checked today)
  • Difference: the Hercules 20V 5Ah Battery 2-Pack is $70.00 cheaper than the Hercules 20V 12Ah Battery today
Hercules
HERCULES 20V 5AH Lithium-Ion Battery Pack 71271 HC01-2P Combo Pack

Hercules 20V 5Ah Battery 2-Pack

HERCULES 20V 5AH Lithium-Ion Battery Pack 71271 HC01-2P Combo Pack

4.9(11 ratings)
$64.99at eBayVerified
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Pros
  • Two packs double your working time without swapping chargers mid-task
  • Each pack is light, so drills and impact drivers stay balanced
  • One can charge while the other runs
  • UL listed
  • Wide temperature range rated -68°F to 167°F
Cons
  • 5 Ah drains fast in saws, grinders and other high-draw tools
  • No single pack matches the 12Ah for all-day runtime
Hercules
Hercules 20V 12Ah Battery

Hercules 20V 12Ah Battery

$134.99at Harbor Freight ToolsObserved at 12:56 AM
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Pros
  • 12 Ah gives long runtime in one pack
  • Same weight as one 5Ah pack despite the larger capacity
  • Fewer swaps on high-draw tools
  • UL listed
Cons
  • Only one battery, so charging means stopping work
  • Heavier and bulkier on compact tools
  • No spare if the pack runs flat mid-job

What separates them

Hercules 20V 5Ah Battery 2-PackHercules 20V 12Ah Battery
Capacity per pack5 Ah12 Ah
Packs includedTwo batteriesOne battery
Total capacity in the box10 Ah across two packs12 Ah in one pack
Weight per packAbout 1.6 lb eachAbout 3.36 lb
Handling on toolsLighter, better balance on drills and driversHeavier, shifts balance toward the rear
Runtime per packModerateLong
Charging workflowUse one while the other chargesSingle pack means downtime while charging
CertificationUL listedUL listed

Price history

$109.99$76.97
Nov 2Nov 9
  • Hercules 20V 5Ah Battery 2-Pack: lowest $82.99 on Nov 2 at eBay; $92.00 on Nov 9.
  • Hercules 20V 12Ah Battery: lowest $76.97 on Nov 9 at eBay.

Prices at every store

Hercules 20V 5Ah Battery 2-Pack

  • eBayPre-owned

    Availability unknownReturns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.

    $49.99Free shippingVerified
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  • eBayNew

    Availability unknownReturns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.

    $64.99Free shippingVerified
    Visit eBay
  • PayMore AbileneNew

    Availability unknown

    $89.99Observed Nov 1, 2026, 11:05 PM
    Visit PayMore Abilene

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Hercules 20V 12Ah Battery

  • Harbor Freight ToolsNew

    In stock

    $134.99+ $8.99 shippingObserved at 12:56 AM
    Visit Harbor Freight Tools
  • eBayNew

    Out of stockSold by smrtinvesting2014

    $76.97Free shippingObserved at 12:56 AM
    Visit eBay

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Specs compared

SpecHercules 20V 5Ah Battery 2-PackHercules 20V 12Ah Battery
Battery Capacity5 Ah12 Ah
Battery Voltage2020 V
CertificationULUL
Item Weight3.2 lbs3.36 lbs
Battery TechnologyLithium-Ion (Li-Ion)Lithium-Ion (Li-Ion)
Battery TypeLithium-ion—
Quantity2—
Shipping Weight3.15 lb.—
Temperature Range-68°F to 167°F (-20°C to 75°C)—
ColorBlack—
Voltage20 V—
Item Length—4.5 in
Show all 18 specsShow fewer specs
SpecHercules 20V 5Ah Battery 2-PackHercules 20V 12Ah Battery
Item Height—4 in
Item Width—2.62 in
Product Weight—3.36 lb.
Product Height—4 in.
Product Length—5-1/2 in.
Product Width—3-3/8 in.

What reviewers say

Hercules 20V 5Ah Battery 2-Pack

  • 4.9 / 511 ratings

Ratings are very high at 4.9 out of 5 from 11 ratings, though the sample is small. Buyers mainly report solid runtime and reliable charging in the Hercules 20V line.

What people mention
  • RuntimePraisedOwners say the 5.0 Ah packs run noticeably longer per charge than the smaller Hercules batteries.
  • Cold weatherPraisedThe wide temperature rating is backed up by buyers using the packs outdoors in cold.
  • WeightMixedThe extra capacity makes tools heavier, which some users notice on long jobs.
  • Brand lock-inCriticisedThe packs only fit Hercules 20V tools, so they are useless if you switch brands.

Questions and answers

Which is better for a circular saw or grinder?
The 12Ah. High-draw tools drain a 5Ah pack quickly, and the 12Ah keeps them running far longer per charge.
Which is better for a drill or impact driver?
The 5Ah two-pack. The lighter packs keep those tools balanced, and you always have a charged spare.
Do both fit the same Hercules 20V tools?
Yes. Both are 20V Hercules lithium-ion packs and work in the same tool lineup and charger.
Is the 12Ah worth stepping up to?
If you run saws or grinders and hate swapping packs, yes. If you mostly drive screws, the two lighter packs serve you better.
How much heavier is the 12Ah?
About 3.36 lb versus roughly 1.6 lb per 5Ah pack. On a compact tool you will notice the difference.

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