The 12V 120Ah lead-acid battery combines industrial-grade reliability with user-friendly performance, making it the ideal solution for both professional applications and personal adventures. Built with a rugged ABS shell, durable copper terminals, and proven deep-cycle technology, it delivers stable energy output under heavy use. From RVs, boats, and solar systems to fleets, mobility vehicles, and utility equipment, this battery ensures dependable power across diverse environments. With long cycle life, high temperature tolerance, and low self-discharge, it offers excellent value for both large-scale buyers and everyday users. A cost-effective, versatile energy solution you can count on—anywhere, anytime.
| Parameters | Values |
|---|---|
| Voltage (V) | 12 |
| 3hr Capacity (Ah) | 120 |
| Dimension (mm) (L × W × H × T/H) | 407 × 170 × 240 × 240 |
| Weight (kg) | 40.0 |
| Material of Shell | ABS |
| Max Resistance (mΩ) | 4.0 |
| Terminal | Copper, M8*20 screw |
| Discharge Capacity under Different Temperature (3hr) | 40°C: 105% / 25°C: 100% / 0°C: 90% / -20°C: 70% |
| Capacity ≥ (Ah, 25°C) | 20hr: 150 / 10hr: 135 / 5hr: 130 / 3hr: 120 |
| Open-Circuit Voltage (V) | 13.0 ~ 13.4 |
| Charging Voltage (V) | Floating: 13.8 / Cycling: 14.7 |
| Max Discharge Current (A) | 660 |
| Max Charge Current (A) | 120 |
| Residual Capacity after Self-Discharge | 30d: 90% / 60d: 85% / 90d: 82% / 180d: 80% |
| Discharge Time | Capacity (Ah, 25°C) |
|---|---|
| 20hr | 150 |
| 10hr | 135 |
| 5hr | 130 |
| 3hr | 120 |
| Brand | Model/Machine | Typical Use with 12V 120Ah Lead-acid |
|---|---|---|
| Airstream | Basecamp 16 | Travel trailer house battery |
| Winnebago | Micro Minnie 1700BH | Travel trailer house battery |
| Jayco | Jay Flight SLX 174BH | Travel trailer house battery |
| Forest River | R-Pod 171 | Travel trailer house battery |
| Hymer (EU) | B-Class ML-T 580 | Motorhome habitation battery |
| Bürstner (EU) | Travel Van T620 | Motorhome habitation battery |
| Adria (EU) | Altea 472 DS | Caravan habitation battery |
| Bailey (EU) | Phoenix 420 | Caravan habitation battery |
| Sea Ray (US) | SPX 190 | Boat house/trolling system battery |
| Jeanneau (EU) | Merry Fisher 605 | Boat house/trolling system battery |
| Beneteau (EU) | Antares 7 | Boat house/trolling system battery |
| Quicksilver (EU) | Activ 605 Open | Boat house/trolling system battery |
| Lund (US) | 1650 Rebel XL | Trolling motor battery (12V) |
| Tracker (US) | Pro Team 175 TXW | Trolling motor battery (12V) |
| Skeeter (US) | ZX150 | Trolling motor battery (12V) |
| Nitro (US) | Z18 | Trolling motor battery (12V) |
| Minn Kota | Endura C2 55 | 12V trolling motor power |
| MotorGuide | Xi3-55 (12V) | 12V trolling motor power |
| Haswing (SEA/EU) | Cayman 55 (12V) | 12V trolling motor power |
| Newport Vessels (US) | NV-Series 55 (12V) | 12V trolling motor power |
✅ Unpack carefully and check the battery for cracks, leaks, or damage.
✅ Make sure the voltage and capacity match your system requirements.
✅ Use only with compatible chargers designed for lead-acid batteries.
Position the Battery
Place the battery upright on a solid surface.
Avoid tilting or shaking to prevent internal damage.
Secure the Mounting
Fix the battery firmly in place to reduce vibration during use.
Keep at least 2–3 cm of space around the battery for ventilation.
Connect the Terminals
Connect positive (+) cable first, then negative (–).
Use the proper M8*20 screw terminals and tighten securely.
Do not over-tighten to avoid stripping the threads.
Check the Connections
Make sure cables are clean, corrosion-free, and firmly attached.
Apply anti-corrosion grease if needed.
🔋 First Charge: Fully charge before first use.
🔋 Regular Charging:
Float mode: 13.5V–13.8V
Cycle use: 14.4V–14.7V
🔋 Avoid overcharging; always use a smart charger with cut-off.
🔋 Never charge in a sealed, high-temperature, or poorly ventilated area.
⚡ Do not discharge below 50% capacity regularly to extend lifespan.
⚡ Max discharge current: 660A, Max charge current: 120A.
⚡ Avoid mixing old and new batteries in the same system.
⚡ For seasonal use (boats, RVs, solar), recharge every 1–2 months.
🛑 Store in a cool, dry place (–15°C to 40°C).
🛑 Check residual capacity:
30 days → ~90%
60 days → ~85%
90 days → ~82%
180 days → ~80%
🛑 Recharge before storage and top up regularly to prevent deep self-discharge.
⚠️ Do not short-circuit the terminals.
⚠️ Keep away from flames, sparks, and smoking areas.
⚠️ Always wear gloves and safety glasses when handling.
⚠️ Do not attempt to open or repair the battery casing.
12‑month limited warranty against manufacturing defects. Technical support available for installation and charging best practices.
Our 12V 20Ah lead-acid battery is crafted with precision and care, using the latest technology and high-quality materials to provide unmatched performance for your electric vehicle. Power up your ride with confidence and enjoy the journey!
One year from the date of shipment
Tell us your application, voltage/capacity, target quantity, and delivery terms. Our team will reply within 24 hours.
