The Wacker Neuson 5200021816 Battery is a genuine OEM Battery designed for the APT4S, APT4T, APT6S, APT6T, APT8S, and APT8T series self-priming pumps, including surge brake, electric brake, skid-mounted, and cold weather variants. As a direct OEM replacement, this battery is sourced from Wacker Neuson and built to the exact specifications required to power the control and brake systems on these trailer- and skid-mounted pump units. Whether you are running a standard configuration or a cold weather-equipped model, part number 5200021816 ensures proper fitment across the full APT pump lineup. Confirm your model number before ordering to match the correct battery for your specific unit.
Key Features
- Genuine OEM Electrical Specification — Sourced directly from Wacker Neuson and matched to the correct voltage and capacity rating required by the APT pump series control and brake systems.
- Drop-In Replacement — Designed to seat and connect in the factory battery tray without modification, maintaining correct terminal orientation and cable routing.
- Broad APT Series Coverage — Fits APT4S, APT4T, APT6S, APT6T, APT8S, and APT8T models in standard, electric brake, surge brake, skid-mounted, and cold weather configurations.
- Cold Weather Variant Compatible — Verified fitment includes cold weather (CW) designated pump models, ensuring year-round serviceability across all APT configurations.
- Protects Brake System Function — A properly charged and correctly specified battery keeps the electric brake and control circuits operating as intended; a failed or undersized battery can render the braking system inoperative, creating a safety and compliance concern for trailered units.
The battery on APT series trailer-mounted pumps powers the onboard electrical systems that operate the surge or electric brake controller, as well as any auxiliary control circuitry built into the pump unit. Without a functioning battery at the correct specification, the brake activation system may fail to engage properly during towing, and other electrically dependent functions on the unit can become unreliable. Replacing a degraded or failed battery with the correct OEM part restores full electrical system performance and ensures the pump trailer meets road safety requirements.
Part Details
| Part Number | 5200021816 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Battery |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| APT6T Pump, Surge Brake, Cold Weather | APT6T CW | 5200019794, 5200019795 |
| APT6S Pump w/Skid | APT6S | 5200018982 |
| APT6T Pump, Surge Brake | APT6T | 5200019646, 5200019647 |
| APT8S Pump w/Skid, Cold Weather | APT8S CW | 5200019800 |
| APT4T Pump, Electric Brake, Cold Weather | APT4T CW | 5200019793, 5200019792 |
| APT8S Pump w/Skid | APT8S | 5200018987 |
| APT8T Pump, Surge Brake, Cold Weather | APT8T CW | 5200019796, 5200019797 |
| APT8T Pump, Electric Brake | APT8T | 5200019649, 5200019648 |
| APT4T Pump, Surge Brake | APT4T | 5200019643, 5200019644 |
| APT4S Pump w/Skid | APT4S | 5200018977 |
| APT4S Pump w/Skid, Cold Weather | APT4S CW | 5200019798 |
| APT6S Pump w/Skid, Cold Weather | APT6S CW | 5200019799 |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
