The quantity and specifications of the charge controllers depend primarily on your total Photovoltaic (PV) power and the battery system voltage. Please follow the steps below to calculate and determine your setup:1. Calculate Maximum Charging CurrentUse the following formula to determine the theoretical maximum charging current:Imax=PtotalVsystemImax​=Vsystem​Ptotal​​

• PtotalPtotal​ : Total power of your PV panels (W)
• VsystemVsystem​ : Your battery system voltage (V)

2. Determine Controller Quantity

• Scenario A: Calculation Result < 100ARecommendation: You only need to install one 100A MPPT charge controller.
• Scenario B: Calculation Result > 100ARecommendation: You need to split the PV array into two separate circuits and install two MPPT charge controllers.Connection Method: Connect the output of both controllers in parallel to charge the battery simultaneously.

3. Critical Check: Battery Maximum Charging CurrentBefore finalizing your setup, you must verify if the total charging current exceeds the battery's maximum allowable charging current.
4. Get a Precise RecommendationTo provide you with a targeted response, please reply with the following details:

• How is your PV system configured?
• What is the Open Circuit Voltage ( VocVoc​ ) of the panels?
• What is the Total Power (W) of the panels?

Contact Us:mailto:sales@myhqsolar.com

Proper circuit protection is essential for the safety and longevity of your solar power system. You must install fuses or circuit breakers between specific components to prevent damage from overcurrent or short circuits.Please refer to the following guidelines for sizing your protection devices:

1. PV Array to Charge Controller

• Requirement: You must install a fuse or circuit breaker on the positive line between the solar panels and the charge controller.
• Sizing Formula:

FuseRating=Isc_total×1.25FuseRating=Isc_total​×1.25

2. Charge Controller to Battery

• Requirement: Generally, a fuse or breaker is not required between the charge controller and the battery for standard setups.
• Note: However, please consult your specific charge controller manual to confirm if an exception applies to your model.

3. Battery to Inverter

• Requirement: This is the most critical connection. You must install a high-current fuse or DC circuit breaker here to protect the battery and wiring.
• Sizing Formula:

FuseRating=Imax_inverter×1.25FuseRating=Imax_inverter​×1.25

We ship within 24–48 hours after you place an order.

• Complete 4-piece kit: If you purchase our pre-bundled solution (battery, solar panel, controller, inverter), delivery usually takes 3–7 business days.
• Custom selection: If you pick and match products yourself, parts may ship from different warehouses. You'll receive multiple packages, and the whole delivery process usually takes 7–14 business days.

We offer a core RV/off-grid solution designed to save you time and effort. Every product (panel, controller, battery, inverter) is hand-matched for compatibility, so you can get a perfectly matched 4-piece set in one click — no endless searching.

If you only need one or two items, you can also purchase individual products here. The more you buy, the more you save with tiered discounts.

The complete 4-piece kit is designed and tested as one system. That means better compatibility, no voltage or connector mismatches, and a smoother installation process. You also get one-stop after-sales support. Plus, bundle pricing usually costs less than buying piece by piece — and you won't risk buying duplicates or parts that don't work well together.

Our 2000W pure sine wave inverter can power most common household appliances: induction cooktop (≤1500W), coffee machine (800–1500W), laptop, TV, fridge, fan, etc. For high-power devices like kettles, AC units, or hair dryers, check both rated power and starting surge to avoid overload.

Yes. The system is built with future upgrades in mind.

You can easily add more solar panels or batteries, or even upgrade the inverter for longer trips or heavier loads.

All core components are designed to work seamlessly together — no need to start from scratch.