LNEX 500A Shunt Battery Monitor — 2.4" Color Screen, 16ft Shielded Cable, Programmable Alarms for 8–100V Systems

LNEX 500A Shunt Battery Monitor is a compact, accurate battery meter with a 2.4" color display and 16 ft shielded cable for real‑time monitoring of 8–100V battery systems.

Designed for RVs, boats, golf carts and off‑grid setups, the LNEX 500A combines a high‑precision external shunt with a clear backlit color screen so you can watch voltage, current, state of charge and alarm thresholds at a glance. It stores the most recent measurements if power is lost, supports multiple battery chemistries including LiFePO4 and lead‑acid, and offers programmable high/low voltage alarms to help prevent over‑discharge.

How does the LNEX 500A improve monitoring accuracy?

The monitor uses an upgraded high‑precision current detector coupled with a dedicated 500A shunt to measure current and voltage with reduced error. The external shunt separates the heavy current path from the display electronics, which minimizes heating and measurement drift.

• High‑precision current detector for tighter measurement tolerance
• External 500A shunt isolates high current from display circuitry
• Automatic storage of latest data on shutdown to prevent data loss

What information does the 2.4" color screen show and how easy is it to read?

The bright, backlit 2.4" color LCD displays voltage, current, power direction, and remaining capacity using a simple, menu‑driven interface. Adjustable brightness keeps the readout comfortable day or night while conserving battery power when needed.

• Clear numeric readouts for voltage and current
• State‑of‑charge and capacity indicators at a glance
• Brightness control for day/night visibility and power saving

Can I set alarms and will they protect my battery?

The LNEX 500A includes programmable high and low voltage alarms that trigger an audible/visual alert and flash the backlight to catch your attention. These alarms help you respond before the battery reaches damaging voltage levels, supporting longer battery life without promising specific lifespan gains.

• Programmable low and high voltage thresholds
• Audible alarm plus flashing backlight for immediate notification
• Works with multiple battery chemistries to match correct voltage limits

How simple is installation and what battery types are supported?

Installation is straightforward with the included transparent shunt holder that marks positive and negative terminals, and a 16 ft shielded cable to place the display away from the battery bank. The monitor supports 8–100V systems and common chemistries, making it versatile for many vehicles and off‑grid systems.

• Transparent shunt holder with clear polarity markings for easier mounting
• 16 ft (approx.) shielded cable lets you place the display at the helm or cockpit
• Compatible with Lead‑Acid, LiFePO4, Lithium‑ion, sealed, gel and flooded batteries

Who this is for: The LNEX 500A is aimed at RV owners, boaters, vanlifers and anyone running 8–100V battery banks who want a reliable, easy‑to‑read monitor with alarm protection and data retention. It suits users who need precise current measurement for charging and load management, installers who appreciate clear shunt labeling and long shielded wiring, and owners of LiFePO4 or lead‑acid systems seeking better visibility into their battery state without complex setup.