Solar Mistake

If Your Solar Isn’t Lasting Till Morning, THIS Is the Reason

ByGLOBALNET ICT

When you invest in a solar system, the expectation is simple: charge during the day, enjoy steady power all night.
But many homeowners wake up frustrated — “Why is my solar not lasting till morning?”

If this sounds familiar, don’t panic. In 90% of cases, the problem isn’t the solar panel. The real reason is hidden somewhere in your battery, load, wiring, or inverter setup.

In this guide, you’ll discover the exact reasons your solar system dies early, how to fix them, and how to make your system last longer than ever.

Solar Mistake
Solar Mistake

1. Your Battery Size Is Too Small for Your Night Load

This is the number one reason most solar setups don’t last till morning.

Here’s the truth:

If your batteries cannot store enough energy, nothing else in the system will matter.

Common mistakes include:

  • Using 100Ah battery for heavy night loads like TV + fan + decoder + bulbs
  • Running a 2nd fan, water dispenser, or router overnight without calculating the load
  • Expecting a single lithium pack to power a whole room

Solution:

Do a proper battery sizing. A quick rule of thumb:

Total Night Load × Hours of Use ÷ Battery Voltage = Required Ah

Or simply use the solar sizing tool on the Globisun App — it calculates everything automatically.

2. Your Panels Aren’t Charging the Battery Fully

Even a big battery will die early if it wasn’t properly charged during the day.

Why this happens:

  • Dusty/dirty solar panels reducing efficiency by up to 30%
  • Panel shading from trees, water tanks, or buildings
  • Wrong panel angle
  • Undersized panels that can never recharge the battery fully

Signs your panel is undercharging:

  • Battery doesn’t reach 100% by afternoon
  • Your charge controller shows slow charging even in bright sun

Solution:

  • Clean your panels every 2–4 weeks
  • Reposition panels to remove shade
  • Upgrade panel wattage for faster charging

3. Your Load at Night Is More Than You Think

Most users underestimate what they are powering.

You think you’re running:

  • Just fans and bulbs

But in reality, you’re also running:

  • Phone chargers
  • Decoders
  • Small fridges
  • CCTV cameras
  • Standing fans with high watt draw
  • Routers
  • Laptops

These little devices consume more power than expected.

Solution:

Audit your night load. If it’s higher than your battery size, you must reduce load or increase battery capacity.

4. Your Battery Is Old or Weak

Batteries don’t die suddenly. They become weaker over time and stop holding charge.

Symptoms of a weak battery:

  • Your system used to last all night but now dies early
  • Battery voltage drops quickly under small load
  • Inverter alarms at night

Solution:

Test the battery or check its state of health (SOH).
If it’s below 70%, it’s time to replace.

5. Wrong Inverter or Low-Efficiency System

Some inverters consume too much power on their own.

Cheap/inefficient inverters can waste 10–30% of your stored power overnight.

Signs of an inefficient inverter:

  • Inverter gets hot easily
  • High idle consumption
  • Poor battery protection
  • Buzzing sounds

Solution:

Choose inverters designed for low-power night use.

6. Poor Wiring and Undersized Cables

Bad wiring steals your power — literally.

Effects of poor wiring:

  • Voltage drop
  • Slow charging
  • Battery not reaching full capacity
  • Power loss at night

Solution:

Use proper cable sizes:

  • 10mm² – 16mm² for battery-to-inverter
  • 4mm² – 6mm² for panel cables

How to Make Your Solar Last Till Morning — Every Time

✔ Use correctly sized batteries
✔ Ensure your panels are charging at full capacity
✔ Reduce unnecessary night load
✔ Upgrade old batteries
✔ Use efficient inverters and proper wiring

If you want an easy way to calculate everything, the Globisun Solar App gives you:

  • Accurate solar sizing
  • Battery runtime predictions
  • Error code troubleshooting
  • Solar quiz games
  • Weather alerts
  • Performance tips

Final Thought

If your solar system isn’t lasting till morning, it’s not because solar doesn’t work — it’s because something in your setup needs adjustment.

With the right panel size, battery capacity, and load management, your solar should power you comfortably from sunset to sunrise.

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