GJS Mechanical and Electrical Engineering Services

20/05/2026

Solar system diagram full loaded wiring ⚡😁 Solar Power Solar energy Solar installation Wiring



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20/04/2026

Another P0.00 Meralco bill with Net Metering. 14Kw Solar panels with 14Kw Luxpower Hybrid Ongrid Offgrid inverter and 32Kwh backup battery power. Thankful client and fully Satisfied...from Philamlife Village Las Pinas - Ilocos Abra.

For more details and inquiries DM / PM or comment below.

20/04/2026

Another P0.00 Meralco bill after upgrade and got P0.00 first Meralco Bill with BYD EV Station Charger 7Kw - Sealion 6 Variant Car. Upgrade from ONGRID to HYBRID SOLAR PV SYSYEM with 16Kwp with 32KwH Backup Power & 16Kw Hybrid Ongrid Offgrid Inverter and NET METERING - thankful client and fully satisfied from Betterliving Subdivision (Malaysia Street)

For more details and inquiries just PM /DM or comment below.

19/04/2026

20/08/2025

One Inverter. Four Powerful Modes.
Wherever you are, whatever the challenge — the Deye 80kW inverter adapts.
🔋 Off-Grid Mode — Reliable power, anywhere
⚙ Diesel Generator Mode — Seamless backup for critical loads
🔄 AC Coupling Mode — Maximize existing PV systems
⏳ Time of Use (TOU) Mode — Store when cheap, use when needed

Flexibility built for the real world.

20/08/2025

20/08/2025

*Why Do Solar Batteries Swell?*

Swelling in solar batteries is more than just a cosmetic issue, it’s a sign of internal stress and a warning that your battery may no longer be safe or efficient. Most commonly seen in lead-acid batteries, swelling occurs due to gas buildup inside the battery casing, usually caused by poor charging habits, extreme temperatures, or battery aging.

*What Causes Swelling in Solar Batteries?*
*✅ Overcharging:*
When a battery receives more voltage than it should, it begins to generate excessive gases like hydrogen and oxygen. These gases build up inside the battery, increasing internal pressure. If left unchecked, this can distort the battery casing and reduce performance — or worse, create a safety risk.

*✅ Deep Discharge:*
Draining a battery below its recommended limit damages its internal chemistry. Repeated deep discharges not only shorten lifespan but can also lead to gas formation and swelling.

*✅ High Temperatures:*
Solar batteries installed in poorly ventilated or overly hot environments degrade faster. Heat speeds up internal reactions, increasing gas pressure and reducing the battery’s long-term reliability.

*✅ Age, Physical Damage, or Factory Defects:*
All batteries wear out eventually. Aging cells, physical damage (like vibration or impact), and rare manufacturing faults can also make batteries more vulnerable to swelling.

*Why This Matters*
Swollen batteries are a serious safety hazard. They can leak, overheat, or even explode in extreme cases. If your battery looks misshapen, it should be disconnected and replaced immediately.
*How to Prevent Battery Swelling:*

✔ Use a high-quality charge controller (preferably MPPT) to regulate charging.
✔ Maintain a safe Depth of Discharge — ideally between 20% to 80% for lithium batteries.
✔ Install batteries in cool, well-ventilated spaces.
✔ Monitor and maintain your solar system regularly.

By understanding and managing these risks, you not only protect your equipment but also maximize the lifespan and value of your investment.

Excellent summary on a critical but often overlooked issue in solar energy systems. Swelling in solar batteries is indeed a red flag that should never be ignored. As you've rightly pointed out, overcharging and thermal stress are among the primary contributors—especially in lead-acid and improperly managed lithium systems.

From a technical standpoint, ensuring the charge controller is correctly sized and programmed for the battery chemistry is vital. MPPT controllers with temperature compensation and proper charging profiles can significantly reduce stress on battery cells. Additionally, incorporating battery management systems (BMS) for lithium setups adds another layer of protection by balancing cells and preventing unsafe operating conditions.

I’d also add that regular maintenance—like checking terminal tightness, electrolyte levels (for flooded batteries), and ambient temperature monitoring—goes a long way in preventing premature battery failure.

Thanks for highlighting this topic. Education around these issues is key to maintaining safe, efficient, and long-lasting solar installations.

27/07/2025

CAT Cables !

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