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Power Tool 18V · 4.0Ah
Ryobi P108 18V 4.0Ah
Ryobi 18V ONE+ High-Capacity Replacement

Ryobi P108 18V ONE+ 4.0Ah High-Capacity Lithium-Ion Replacement Battery

Drop-in replacement battery for the Ryobi 18V ONE+ system. The P108 is a high-capacity 4.0Ah pack (5S2P, 18650), backward-compatible with the entire Ryobi 18V ONE+ lithium and NiCd tool lineup, with verified BMS handshake on genuine Ryobi 18V chargers. This is a Ryobi ONE+ battery replacement and 18V 4.0Ah P108 Li-ion replacement for cordless drills and power tools.

Voltage18V
Capacity4.0Ah
Cell Type18650 cells
Configuration5S2P
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Overview

Drop-in replacement battery for the Ryobi 18V ONE+ system. The P108 is a high-capacity 4.0Ah pack (5S2P, 18650), backward-compatible with the entire Ryobi 18V ONE+ lithium and NiCd tool lineup, with verified BMS handshake on genuine Ryobi 18V chargers. This is a Ryobi ONE+ battery replacement and 18V 4.0Ah P108 Li-ion replacement for cordless drills and power tools.

Manufactured by Dongguan Ruineng New Energy (Nuranu) — a high-tech custom battery factory since 2012 — the P108 is produced under a fully automated assembly line with 100% aging and end-of-line testing. It is engineered for OEM clients, hardware distributors, and private-label brands that need OEM-equivalent fit and performance at factory-direct pricing.

Ryobi P108 18V 4.0Ah view 1Ryobi P108 18V 4.0Ah view 2Ryobi P108 18V 4.0Ah view 3Ryobi P108 18V 4.0Ah view 4

Compatible Host Tools

  • Ryobi 18V ONE+ drills, drivers & saws
  • ONE+ lithium and ONE+ legacy tools
  • P102 / P107 / P108 compatible platform

Target Applications

  • 18V ONE+ Cordless Tools: The high-capacity 4.0Ah P108 sustains long runtime across the broad Ryobi 18V ONE+ tool range — from drills to high-demand saws.
  • Backward-Compatible Fleets: The P108 runs the entire ONE+ lineup, including legacy tools — one high-capacity pack for the whole platform.
  • Private-Label Distributors: Sourced with your branding and carton-ready packaging for the Ryobi 18V ONE+ platform.

Core Technical Advantages

1. High-Capacity 18V 4.0Ah

A 5S2P string of Grade-A 18650 cells delivers a genuine 4.0Ah — high runtime in the standard ONE+ form factor.

2. Full ONE+ Backward Compatibility

The P108 is compatible across the entire Ryobi 18V ONE+ system, including older ONE+ tools — a true universal ONE+ replacement.

3. Verified Charger Handshake

BMS handshakes correctly with genuine Ryobi 18V chargers; charging and protection behave identically to the OEM ONE+ pack.

Product Video

Factory assembly line, BMS testing, and P108 demonstration footage. Contact sales for additional product videos.

Technical Specifications

FeatureSpecification
Replacement ModelP108
Compatible BrandRyobi (Ryobi 18V ONE+)
Nominal Voltage18V
Rated Capacity (real)4.0Ah
Cell Type18650 · 2000mAh
Configuration5S2P
Shell ColorGreen + Black
Proprietary MoldNo (standard form factor)
Net WeightConfirmed at order
Battery DimensionsConfirmed at order
Inner BoxConfirmed at order
Master CartonConfirmed at order
Qty per CartonConfirmed at order
Carton Net / GrossConfirmed at order

Packaging & Wholesale Logistics

The P108 ships in carton-ready retail packaging engineered for distributor resale and international freight. Every batch ships with UN38.3 transport test report, IEC 62133 safety certificate, MSDS, and CE Declaration of Conformity for smooth customs clearance in EU, US, UK, AU, and JP markets.

MOQ
100 units (catalog) · 500 units (private label)
Lead Time
25–35 days standard · 18–22 days expedited
Payment
30% T/T deposit + 70% against B/L
Warranty
12 months

Frequently Asked by Distributors

Is this an 18V 4.0Ah P108 Li-ion replacement battery for Ryobi ONE+?
Yes. The P108 is an 18V 4.0Ah Li-ion replacement battery for the Ryobi 18V ONE+ system. Rather than replacing the cells in an old P108, a new pack with fresh Grade-A cells and BMS is more reliable — and it stays backward-compatible with the entire ONE+ lineup (P102 / P104 / P107).
What is the MOQ for the P108 replacement battery?
Standard MOQ is 100 units for the P108. Paid samples of 1–10 units are available for BMS-handshake validation before a production order. Private-label or custom-spec runs start at 500 units.
Is the P108 drop-in compatible with original Ryobi chargers?
Yes. The P108 BMS is flashed with model-specific firmware so it handshakes correctly with genuine Ryobi chargers — charging, fuel-gauge reporting, and safety lockouts behave identically to the OEM pack. Handshake is validated on 100% of units at end-of-line.
Are these Ryobi replacement batteries any good?
Yes. Our P108 uses Grade-A tier-1 cells (Samsung / LG / Panasonic / BAK), capacity- and resistance-matched, with a BMS validated against genuine Ryobi chargers on 100% of units. It is built as a professional-grade Ryobi replacement battery, not a low-cost clone, and is backed by a 12-month warranty.
Will Ryobi or Home Depot replace my battery — and how is your P108 different?
Ryobi's own warranty covers genuine packs through Home Depot and Ryobi service channels. We are an independent factory supplying new P108 replacement packs — a direct, lower-cost alternative when a pack is out of warranty or you need volume supply, with full UN38.3 / IEC 62133 / CE documentation.
Do you replace the cells in my old Ryobi battery?
We supply complete, ready-to-use P108 replacement packs — not a cell-replacement / rebuild service. A new pack with fresh Grade-A cells and a fresh BMS is far more reliable than replacing the cells in an old Ryobi battery, and ships with full safety documentation.
How do I install the P108 replacement battery?
It installs exactly like a genuine Ryobi pack — slide it onto the tool or equipment until it latches, and charge it on any genuine Ryobi charger for the matching platform. No adapter or modification needed.
Which Ryobi tools is the P108 compatible with?
The P108 is a direct replacement across the Ryobi 18V ONE+ platform, matching the original latch geometry and fitting the corresponding Ryobi 18V ONE+ tools and equipment.
What cells and configuration does the P108 use?
The P108 uses Grade-A 18650 cells (2000mAh each) in a 5S2P configuration for a nominal 18V and a true rated capacity of 4.0Ah. Cells are matched by capacity (±20 mAh) and internal resistance (±5 mΩ) before assembly. Preferred cell brand (Samsung / LG / Panasonic / BAK) can be specified at order.
What is the warranty on the P108?
All P108 replacement packs carry a 12-month warranty against manufacturing defects. Every batch ships with UN38.3 test report, IEC 62133 certificate, MSDS and CE Declaration of Conformity for smooth customs clearance worldwide.

Need a Custom Quote or Technical Details?

Our engineering team is ready to discuss specifications, certification, MOQ, and OEM / private-label customization for the P108.

✉ Email Sales 📱 WhatsApp ☎ +86 13823274651

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