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eg4|SKU:1510978

EG4 Chargeverter Plus — 100A AC-to-DC Generator Battery Charger

Reliable Generator Charging When Solar Isn't Enough

Dirty power filtered clean — Conditions unstable generator output to protect your battery bank
100A at 240VAC input — Maximum continuous charging when paired with higher-voltage generators
Closed-loop battery communication — CAN and RS485 ports enable SOC-based charging control
Automatic generator start ready — Dry contacts trigger start/stop based on voltage or SOC
UL Listed for safety — Built-in breaker enables fast output shutdown for system protection
  • FREE System Design Consultation -- Our engineers verify compatibility with your battery bank and generator
  • FREE Shipping -- Ships free on all orders, no minimum threshold

$568.95

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EG4 Chargeverter Plus
EG4 Chargeverter Plus
$568.95

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EG4 Chargeverter Plus
EG4 Chargeverter Plus — 100A AC-to-DC Generator Battery Charger
$568.95

Reliable Generator Charging When Solar Isn't Enough

The EG4 Chargeverter Plus sits between your generator and 48V lithium battery bank, conditioning unstable incoming power into clean, controlled DC charging. For any off-grid system that relies on solar as the primary source, this unit fills the gap during extended cloudy weather, winter dips in production, or grid outages. It handles dirty generator power that would otherwise cause inverter faults or shutdowns, keeping your grid-independent setup running without interruption. UL Listed with CAN and RS485 closed-loop communication for SOC-based charging when paired with compatible lithium batteries.

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UL Listed
100A DC Output
120/208/240VAC Input
CAN & RS485 Ready
100A
Max DC Charging Current
120–240VAC
AC Input Range
~4W
Idle Consumption
Keep Your Battery Bank Charged When Solar Can't Deliver

Keep Your Battery Bank Charged When Solar Can't Deliver

When a week of overcast skies or a winter storm cuts your solar production, the grid-independent homeowner faces a real problem: a draining battery bank with no way to recover. The EG4 Chargeverter Plus eliminates that vulnerability by sitting between your generator and 48V lithium bank, conditioning unstable AC power into clean, controlled DC charging at up to 100A. Off Grid Vault pre-vets every component we carry for real compatibility — this charger speaks CAN and RS485 to communicate directly with your battery BMS, so you are not guessing whether the pieces work together.

Handles the Generator Power Your Inverter Won't

Handles the Generator Power Your Inverter Won't

Standard generators produce dirty, unstable AC that can trigger faults in sensitive solar equipment. The Chargeverter Plus is built to accept that power — 120V, 208V, or 240VAC input — and clean it before it reaches your batteries. At 240VAC, you get the full 100A continuous charging rate; at 120V, it delivers 50A. Programmable warm-up and cool-down periods protect your generator from abrupt load changes, while the built-in breaker provides fast shutdown capability. UL Listed to meet recognized safety standards.

Automatic Start Means You Don't Have to Monitor It

Automatic Start Means You Don't Have to Monitor It

With built-in dry contacts, the Chargeverter Plus supports automatic generator start and stop based on voltage or state-of-charge thresholds you set. When your battery bank drops to your chosen level, the generator fires on its own. When charging completes, it shuts down with a programmed cool-down cycle. Combined with closed-loop CAN and RS485 communication, the charger adjusts output based on actual SOC data from compatible lithium batteries — not just voltage readings. Idle consumption sits around 4W, so it draws almost nothing while standing by.

System Compatibility

Confirm these conditions before adding the Chargeverter Plus to your setup.

  • 48V lithium battery bank with CAN or RS485 communication port
  • Generator rated for 120V, 208V, or 240VAC output at 50–60 Hz
  • System supports two-wire auto generator start if using AGS feature

Where It Fits

Designed for setups that need dependable backup charging beyond solar alone.

Residential Off-Grid Homes
Remote Cabins & Homesteads
Workshops & Backup Power Systems

Full specifications

At a glance

Dimensions
See product page
Power
120 / 208 / 240 VAC
Surface
See product page
Compliance
UL Listed
Full specifications9 data points across 4 categories

Dimensions

DimensionsSee product page

Power & Performance

Max Charging Current100A DC
AC Input Voltage120 / 208 / 240 VAC
AC Frequency50–60 Hz
CommunicationCAN / RS485
Idle Consumption~4W

Materials

MaterialsSee product page

Compliance & Warranty

Safety CertificationUL Listed
Max Altitude9,843 ft (3,000 m)

The Off Grid Vault Promise

We stand behind every product we sell — because serious off-grid builds require serious accountability.

30-Day Performance GuaranteeIf it doesn't perform as specified, we make it right — uninstalled, in original packaging.
Free ShippingShips free on all orders, including LTL freight on large systems.
Authorized DealerWarranty claims handled directly through us as an authorized EG4 dealer.
★★★★★
“Installed the Chargeverter Plus between my Champion 3500 and my EG4 48V battery rack. Three days of heavy overcast last month and my batteries never dropped below 70% SOC. The automatic start fired the generator on its own — I didn't have to go outside at 2 AM. This is exactly the piece I was missing to make my off-grid setup truly hands-off during bad weather.”
F
First L.Prescott, AZ

EG4 Chargeverter Plus

The EG4 Chargeverter Plus is a high-capacity AC-to-DC battery charger built to make generator charging straightforward, stable, and dependable when solar production isn’t enough. Installed between your generator and battery bank, it conditions and regulates incoming power to protect your batteries while delivering consistent, controlled charging.

Instead of replacing your solar setup, the Chargeverter Plus enhances it by adding a reliable backup charging solution. Whether you’re dealing with extended cloudy weather, grid outages, or seasonal dips in production, it ensures your battery bank stays charged and ready when you need it most.

Designed for residential and off-grid energy storage systems that primarily run on solar but require a reliable backup charging solution. It’s an excellent fit for homes, cabins, workshops, and backup power setups where a generator helps maintain battery levels during extended outages, cloudy weather, or periods of low solar production.


Chargeverter Plus

Chargeverter Plus Specs

  • Max Charging Current: 100A DC
  • AC Input Voltage: 120 / 208 / 240 VAC
  • AC Frequency: 50–60 Hz
  • Communication: CAN / RS485
  • Idle Consumption: ~4W
  • Max Altitude: 9,843 ft (3,000 m)


Chargeverter Plus Features

  • Smart Generator Backup for Solar Systems: Allows you to safely charge 48V lithium batteries with a generator when solar output is reduced due to clouds, storms, or short winter days.
  • Works with Lower-Budget Generators: Designed to handle unstable or “dirty” generator power, helping prevent charging errors, inverter faults, and system shutdowns.
  • Wide AC Input Compatibility: Operates on 120VAC, 208VAC, or 240VAC, with optimized performance on 240VAC for maximum output.
  • UL Listed: Built to meet higher safety and compliance standards
  • Smarter Generator Control: Cleaner starts and smoother shutdowns with two-wire start and programmable warm-up & cool-down
  • Closed-Loop Battery Communication: CAN and RS485 communication ports allow SOC-based charging when paired with compatible lithium batteries.
  • Automatic Generator Start Ready: Built-in dry contacts support automatic generator start and stop based on voltage or state-of-charge thresholds.
  • Built-In Safety Protection: Integrated breaker allows fast output shutdown for added safety and system protection.
  • Wider Battery Voltage Support: Compatible with 40–60V battery systems
  • Stronger Charging Performance: 50A max continuous charging at 120V, 100A max continuous charging at 240V


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Frequently Asked Questions

If you already own a generator, the Chargeverter Plus turns it into a controlled battery charger instead of a noisy backup you manually manage. Compare that to the cost of spoiled food, a dead well pump, or no heat during a multi-day outage — the math is straightforward. This is a one-time purchase that makes your existing generator useful in a way that protects your lithium batteries. Finance with Affirm to spread the cost.
Off Grid Vault is an authorized EG4 dealer. That means warranty claims go through us, not through a ticket queue with no accountability. We also offer a free system design consultation — if you are unsure whether the Chargeverter Plus is the right fit for your battery bank and generator combination, our engineers will verify compatibility before you buy. Not a box shipped from a warehouse with zero after-offer support.
The Chargeverter Plus supports 40–60V battery systems with CAN and RS485 closed-loop communication for SOC-based charging. It accepts 120V, 208V, or 240VAC generator input. If your battery supports CAN or RS485 and your generator outputs one of those voltages, you are in the clear. Still unsure? Take advantage of our free system design consultation — tell us your exact components and we will confirm compatibility.
Yes. The Chargeverter Plus installs between your generator and battery bank — it does not replace your existing solar charge controller or inverter. It is an addition, not a redesign. If your off-grid system is already running, you can wire this in as a backup charging path that activates when solar production drops. Our free system design consultation can walk you through the integration for your specific setup.
The Chargeverter Plus is UL Listed, which means it has been tested against recognized safety standards — not just internal QA. Specific warranty terms are set by EG4 and we honor them fully as an authorized dealer. If a warranty claim arises, you contact us directly and we handle it. We also include a 30-day performance guarantee: if it does not perform as specified, uninstalled and in original packaging, we make it right.
A generator alone cannot safely charge lithium batteries in an off-grid setup. Feed raw generator power directly into a 48V lithium bank and you risk BMS faults, charging errors, or damage from unstable voltage and frequency. The Chargeverter Plus conditions that power, regulates the charge current, and communicates with your battery via CAN or RS485. It also handles automatic start/stop so your generator runs only when needed. Without it, you are manually managing a risky connection.
SKU: 1510978 Category: Brand:

The Off Grid Vault Promise

We stand behind every product we sell — because serious off-grid builds require serious accountability.

30-Day Performance Guarantee If it doesn't perform as specified, we make it right — uninstalled, in original packaging.
Free Shipping Ships free on all orders, including LTL freight on large systems.
Authorized Dealer Warranty claims handled directly through us as an authorized EG4 dealer.

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About eg4 Solar Accessories

eg4 is a trusted manufacturer of premium solar accessories. OffGridVault is an authorized dealer offering the full eg4 lineup with free delivery, price match guarantee, and expert support.

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