letoom 12V 1.2Ah Auxiliary Battery for Mercedes‑Benz (OE N0000004039) — Sealed SLA, Maintenance‑Free

letoom 12V 1.2Ah auxiliary battery replaces Mercedes‑Benz OE N0000004039 for 2007–2023 models and provides sealed lead‑acid power for vehicle auxiliary systems (not a starter battery).

This compact, maintenance‑free 12V 1.2Ah battery is designed to serve Mercedes‑Benz auxiliary power needs across many 2007–2023 models that originally used OE N0000004039. It’s a sealed lead‑acid (SLA) unit intended for electronics, memory retention, and low‑current accessories rather than engine starting. The battery ships as a single quantity with no core charge required.

Which Mercedes‑Benz models will this letoom battery fit?

This battery matches applications that specify OE part number N0000004039; many Mercedes models from 2007 through 2023 use that auxiliary battery form factor. Always confirm vehicle requirements against your owner’s manual or the OEM part number before buying to ensure compatibility.

• Designed to replace OE N0000004039 auxiliary battery
• Compatible with Mercedes‑Benz vehicles listed for 2007–2023 auxiliary battery use
• Compact dimensions fit OEM auxiliary battery trays and brackets
• Check vehicle manual or VIN parts lookup for exact fitment

How should I use and install this letoom auxiliary battery?

Installation follows standard auxiliary battery replacement steps: disconnect negative first, remove the old battery, secure the replacement, then reconnect positive last. Because this is a sealed lead‑acid unit, it arrives ready for use and needs no water topping or regular maintenance.

• Disconnect vehicle main battery negative terminal before work
• Remove and replace the original auxiliary battery following OEM guidance
• Torque connections to manufacturer specifications to avoid electrical issues
• Sealed design means no electrolyte maintenance required

What performance and safety characteristics does the letoom SLA battery offer?

The letoom 12V 1.2Ah is a sealed lead‑acid battery built for reliable low‑current duty cycles, such as retaining vehicle settings, powering sensors, and running auxiliary electronics. It is not intended as a starter battery and should not be used to crank engines. The sealed construction minimizes leakage and reduces installation orientation constraints.

• 12 volts, 1.2 ampere‑hours rated capacity for auxiliary systems
• Sealed lead‑acid chemistry for spill‑resistant, maintenance‑free operation
• Not suitable for engine starting or high‑current cranking
• Single item shipped with no core charge required

How long will the letoom auxiliary battery last and how do I store it?

Service life depends on vehicle usage patterns, discharge depth, and charging system health; typical SLA auxiliary batteries last several years under normal conditions. For storage, keep the battery in a cool, dry place and recharge it periodically to avoid deep discharge, which shortens service life.

• Expected multi‑year service under typical auxiliary loads
• Avoid prolonged deep discharge to maximize lifespan
• Store in cool, dry environment and maintain a partial charge
• Follow disposal and recycling rules for lead‑acid batteries

Who is this for: The letoom 12V 1.2Ah auxiliary battery is for Mercedes‑Benz owners, independent mechanics, and fleet managers who need a direct replacement for OE N0000004039. Choose this sealed lead‑acid unit if your vehicle requires a compact, maintenance‑free auxiliary battery for electronics, memory retention, or low‑current accessories and you understand it is not a starter battery.