smart solar and power lithium battery guide: Understanding the Sunbyte 12.8V 100Ah
The Sunbyte 12.8V 100Ah (সানবাইট ১২.৮ভি ১০০এএইচ) is a prismatic LiFePO4 battery built with new grade A cells. Its nominal voltage is 12.8 V and it stores 1.28 kWh of energy, making it suitable for home solar storage, small commercial backup, and mobile power units. The battery can deliver up to 100 A continuous charge and discharge currents, with pulse capabilities of 120 A for short bursts.
Key specifications at a glance
- Nominal Voltage: 12.8 V
- Capacity: 100 Ah (1280 Wh)
- Max Continuous Charge/Discharge: 100 A
- Pulse Charge/Discharge (10 s): 120 A
- Operating Temperature (Charge): 0 °C – 45 °C
- Cut‑off Voltage: 10.6 V
- Full Charged Voltage: 14.6 V
- Dimensions (mm): 327 × 168 × 217
- Net Weight: 9.8 kg
- Warranty: 60 months (3 years)
These figures translate into a battery that can handle deep‑cycle use with a cycle life of over 3000 cycles at 80 % depth‑of‑discharge, verified at 25 °C. The built‑in fire protection system and low DC resistance (≤10 mΩ) add safety and efficiency.
Why choose Sunbyte for your solar storage?
When evaluating lithium batteries for solar projects, reliability, safety, and scalability are top priorities. Sunbyte delivers on all three:
- Intelligent BMS: Protects against over‑charge, over‑discharge, short circuit, and temperature extremes.
- Scalable design: Supports series and parallel connections (4S1P configuration) to create 24 V, 36 V, or 48 V systems without additional hardware.
- Environmentally friendly: LiFePO4 chemistry is non‑toxic and recyclable, aligning with green‑energy goals.
smart solar and power (স্মার্ট সোলার অ্যান্ড পাওয়ার) is the authorized distributor in Bangladesh, offering professional installation, site surveys, and after‑sales support. Choosing a local trusted provider ensures compliance with national standards and access to rapid service.
How to size a Sunbyte battery for your home
Start by estimating daily energy consumption in watt‑hours. For a typical Bangladeshi household using LED lighting, a small refrigerator, a TV, and a few fans, the load might be around 3 kWh per day. The Sunbyte stores 1.28 kWh, so two batteries in parallel would cover most of the demand with a safety margin.
When designing a system, consider these steps:
- Calculate total daily load (Wh).
- Determine desired autonomy days (usually 1‑2 days for backup).
- Divide required storage by 1280 Wh to find the number of batteries.
- Choose series or parallel configuration based on the inverter voltage (12 V, 24 V, 48 V).
For example, a 24 V off‑grid inverter paired with two Sunbyte units in series (4S2P) yields 24 V × 200 Ah = 4.8 kWh, enough for a modest household.
Installation best practices
Proper installation maximizes performance and lifespan. Follow these guidelines:
- Location: Install in a well‑ventilated area away from direct sunlight and moisture. Ambient temperature should stay within the 0 °C – 45 °C charging range.
- Mounting: Use a sturdy, level platform. Secure the battery with brackets to prevent movement.
- Wiring: Use appropriately sized copper cables; the screw terminals simplify connections. Keep cable lengths short to reduce voltage drop.
- Protection: Apply a fuse or circuit breaker on both charge and discharge lines as recommended by the installer.
- Series/Parallel: When connecting multiple units, ensure all batteries are at the same state of charge before linking.
After wiring, perform a voltage check to confirm the system reads the expected full‑charged voltage (≈14.6 V per unit). Then integrate with your solar charge controller or inverter.
Maintenance and monitoring
LiFePO4 batteries require minimal maintenance, but regular checks help avoid unexpected downtime:
- Inspect terminals for corrosion and tighten if needed.
- Verify that the BMS indicator (if present) shows normal operation.
- Check the battery temperature during high‑load periods; temperatures above 45 °C may reduce lifespan.
- Perform a full charge‑discharge cycle at least once a year to balance cell voltages.
smart solar and power offers remote monitoring solutions that can alert you to voltage or temperature anomalies, allowing proactive service.
Common mistakes to avoid
Even experienced users can slip into habits that shorten battery life. Keep these points in mind:
- Do not charge the battery below 0 °C; low temperatures increase internal resistance.
- Avoid deep discharge below the cut‑off voltage (10.6 V) for extended periods.
- Do not exceed the recommended charge current of 100 A for continuous operation.
- Never mix batteries of different ages or capacities in the same series/parallel string.
Following these practices ensures the Sunbyte battery delivers its full 6000‑cycle promise.
Choosing the right solar partner
Partnering with a knowledgeable installer matters. smart solar and power (স্মার্ট সোলার অ্যান্ড পাওয়ার) provides:
- Free site surveys to assess roof space, shading, and load requirements.
- Custom system design that matches the Sunbyte battery capacity with appropriate solar panels and inverter.
- Professional installation by certified technicians.
- After‑sales support, including warranty handling and periodic performance checks.
Ready to start? get a free expert consultation from smart solar and power or explore our solar products to see the full range of compatible equipment.
Related reading: সোলার প্যানেল কি ছাদে ওজন বাড়ায়? বিল্ডিং এর নিরাপত্তার জন্য গাইড
Frequently Asked Questions
What is the nominal voltage of the Sunbyte 12.8V 100Ah battery?
The nominal voltage is 12.8 V, with a full‑charged voltage of 14.6 V.
How many charge‑discharge cycles can the Sunbyte battery handle?
It is rated for over 3000 cycles at 80 % depth‑of‑discharge, with a total cycle life of 6000 cycles under ideal conditions.
Can I connect multiple Sunbyte batteries in series for higher voltage?
Yes, the battery supports series and parallel connections. Using the 4S1P configuration you can create 24 V, 36 V, or 48 V systems as needed.
What maintenance does the Sunbyte lithium battery require?
Maintenance is minimal: keep terminals clean, ensure proper ventilation, avoid charging below 0 °C, and perform an annual full charge‑discharge cycle to balance cells.
Is the Sunbyte battery suitable for off‑grid solar home systems in Bangladesh?
Absolutely. Its high discharge current, robust BMS, and ability to be linked in series or parallel make it ideal for off‑grid solar home systems and small commercial backup.