ZhanPeng
2 Pack 8.0Ah 18V Battery for Ridgid R840085 R840087
2 Pack 8.0Ah 18V Battery for Ridgid R840085 R840087
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2 Pack 8.0Ah 18V Lithium-Ion Battery for Ridgid R840085 R840087
Quick Answer: This 2-pack of 8.0Ah 18V lithium-ion batteries is a high-capacity replacement set for Ridgid 18V cordless tools, including the Gen5X lineup. Each battery delivers 144Wh of energy (18V × 8.0Ah) — twice the capacity of a standard 4.0Ah battery — and directly replaces Ridgid R840083, R840085, R840086, R840087, R840088, and R840089 series batteries.
Key Specifications
| Package Contents | 2 × 8.0Ah 18V Lithium-Ion Batteries |
| Battery Type | Rechargeable Lithium-Ion (Li-ion) |
| Voltage | 18V |
| Capacity (per battery) | 8.0Ah (8000mAh) |
| Replaces Models | Ridgid R840083, R840085, R840086, R840087, R840088, R840089, AC840085, AC840087, AC840087P |
| Compatible Chargers | Ridgid R840091, R840093, R840095 (Gen5X), R86092, AC840094 |
| Protection | Built-in BMS: overcharge, over-discharge, over-current, short-circuit protection |
Which Ridgid Tools and Chargers Do They Fit?
These batteries work with all Ridgid 18V cordless power tools — including the Gen5X series — that use the battery packs listed above. They charge on standard Ridgid 18V lithium-ion chargers, including the R840095 Gen5X charger, R840091, R840093, R86092, and AC840094.
Why Choose an 8.0Ah 2-Pack?
Capacity directly determines runtime. At 8.0Ah, each battery stores twice the energy of a 4.0Ah pack and four times that of a 2.0Ah pack — ideal for high-drain tools like circular saws and reciprocating saws. With two batteries in rotation — one in the tool, one on the charger — you can work continuously without waiting for a recharge.
Frequently Asked Questions
Which Ridgid battery part numbers do these replace?
They are direct replacements for Ridgid R840083, R840085, R840086, R840087, R840088, R840089, and the AC840085, AC840087, and AC840087P series. Any tool or charger that works with these models will work with these batteries.
Are these batteries compatible with Ridgid Gen5X tools?
Yes. They fit Ridgid 18V cordless tools including the Gen5X lineup, and they charge on the R840095 Gen5X charger as well as the R840091, R840093, R86092, and AC840094.
How long does an 8.0Ah 18V battery last?
Runtime depends on the tool and workload, but as a reference: 144Wh of energy provides approximately twice the runtime of a 4.0Ah battery and four times that of a 2.0Ah battery under identical conditions.
Can I use my original Ridgid charger?
Yes. These batteries are compatible with Ridgid 18V Li-ion chargers including the R840095 (Gen5X), R840091, R840093, R86092, and AC840094.
What is the advantage of buying a 2-pack?
A 2-pack gives you 288Wh of total energy on hand. While one battery powers your tool, the other can be charging, eliminating downtime on longer jobs — and the per-battery cost is lower than buying two single packs.
Are these original Ridgid batteries?
No. These are replacement batteries engineered to match the fit, voltage, and interface of the original Ridgid 18V battery packs, offering comparable performance at a lower price.
This is a third-party replacement product sold by ZhanPeng, operated by Changsha Liping Technology Co., Ltd. It is not manufactured by or affiliated with the original device manufacturer. All brand names, model numbers, and trademarks referenced are the property of their respective owners and are used solely to indicate product compatibility. ZhanPeng is an independent retailer and is not sponsored, authorized, or otherwise connected with the original equipment manufacturer.