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Ridgid 18V battery prices per Ah

Genuine Ridgid 18V batteries on eBay ranked by price per amp-hour including shipping. Updated Oct 11, 2026 15:16 UTC.

Cheapest new, per Ah$9.99
Cheapest used, per Ah$8.75
Cheapest single battery$31.00
Condition
Capacity
$/AhPrice ShippingAhWh $/WhPartCondition Listing
$8.75$35.00free472$0.49R840087UsedRIDGID 18V 4.0Ah Li-Ion Hyper High Capacity Battery Pack R840087
$9.50$37.99free472$0.53AC840040UsedRIDGID 18V 4.0Ah Max Output Li-Ion Battery AC840040 Black/Orange
$9.99$39.95free472$0.55R840040NewRidgid 18V 4AH Max Output Li-Ion Battery R840040
$10.75$34.99+ ship472$0.60R840040UsedRIDGID 18V 4Ah Max Output Li-Ion Battery R840040 Black Cordless Pack 18 Volt
$10.75$35.00+ ship472$0.60UsedRidgid 18v 4ah Lithium Battery, R87004
$12.00$39.99+ ship472$0.67UsedRIDGID 4AH LITHIUM 18V BATTERY
$15.50$31.00free236$0.86AC840086Open boxRIDGID AC840086 18V 2 Ah Hyper Lithium Ion Battery
$16.50$33.00free236$0.92UsedRIDGID 2Ah 18V Lithium-Ion Battery R87002 Black Power Tool Battery
$16.50$33.00free236$0.92R840020UsedRIDGID R840020 18V 2Ah MAX Output Li-Ion Power Tool Battery Pack Black
$20.18$32.36+ ship236$1.12AC840086UsedRidgid Genuine OEM AC840086 18V 2AH Hyper Lithium-Ion Single Battery
$20.25$32.50+ ship236$1.12R840020Open boxRidgid R840020 18V 2.0Ah MAX Output Lithium Battery Pack Li-Ion 2Ah Compact
$20.46$40.93$7.99236$1.14Open boxRIDGID 18V 2.0 Ah MAX Output Lithium-Ion Battery Genuine OEM Brand New
$21.00$42.00free236$1.17Open boxRIDGID 18V Battery hyper 2ah
$21.50$35.00+ ship236$1.19R840020Open boxRIDGID R840020 18V 2Ah Lithium-Ion Power Tool Battery, Black
$26.91$32.36+ ship1.527$1.49AC840085UsedRidgid Genuine OEM AC840085 1.5 Amp Hour 18V Compact Lithium Ion Power Tool

Showing 15 of 15 listings

Buying tips

Only genuine batteries are listed: we drop "for DeWalt / compatible / replacement" packs, whose stated capacity is often far above the real one, and capacities the maker does not sell for that platform. Within one platform the price per Ah is a fair comparison; across platforms compare the price per Wh, because an Ah of a 12V pack holds less energy than an Ah of an 18V or 40V pack. High-output packs (Milwaukee High Output and Forge, DeWalt PowerStack, FlexVolt, Ryobi HP) deliver more power to demanding tools at a higher price per Ah.

How this table works

We collect Buy It Now listings from eBay US several times a day in the Power Tool Batteries category, filtered by the maker's brand and voltage, and divide the total price, including shipping, by the amp-hours (multi-packs by their total). FlexVolt packs are counted at their 20V rating. We remove chargers, kits with tools, adapters, holders, empty cases, dead or untested packs, aftermarket "compatible" batteries and offers far below every other listing.