What Is a 140Ah Lead-Acid Battery?
A 140Ah (Ampere-hour) lead-acid battery provides 140 ampere-hours of capacity at its rated voltage, typically 12V. This means it can deliver 1 amp of current for 140 hours, 10 amps for 14 hours, or 140 amps for 1 hour. The actual runtime depends on the discharge rate — higher current draws result in lower effective capacity due to Peukert’s Law.
140Ah Lead-Acid Battery Specifications
- Nominal voltage: 12V
- Capacity: 140Ah @ 20-hour rate
- Weight: Typically 35–45 kg for standard models
- Dimensions: Approximately 513×189×215 mm (varies by manufacturer)
- Terminal type: M8 threaded terminal
- Cycle life: 400–600 cycles at 50% DoD
Types of 140Ah Lead-Acid Batteries
AGM VRLA: Sealed, maintenance-free. Best for UPS, backup power, and applications where maintenance is difficult. Self-discharge: 1–3% per month.
GEL VRLA: Sealed with gel electrolyte. Better deep discharge recovery than AGM. Ideal for solar applications and cyclic use.
Flooded/Wet Cell: Lower cost, requires maintenance (water top-up). Best for budget installations with proper ventilation.
Applications for 140Ah Lead-Acid Batteries
- Solar energy storage systems (small to medium off-grid)
- UPS and backup power for homes and small businesses
- Telecom base station backup (12V or 24V configurations)
- Electric golf carts and low-speed vehicles
- Marine battery applications
- Solar street lighting systems
- Inverter backup power
How to Connect 140Ah Batteries in Series and Parallel
In Series (increase voltage):
2× 12V 140Ah in series = 24V 140Ah system
4× 12V 140Ah in series = 48V 140Ah system
In Parallel (increase capacity):
2× 12V 140Ah in parallel = 12V 280Ah system
Charging a 140Ah Lead-Acid Battery
- Bulk charge voltage: 14.4–14.8V for AGM; 14.1–14.4V for GEL
- Float voltage: 13.5–13.8V
- Charging current: Up to 0.25C (35A for 140Ah battery)
- Recommended charger: Automatic 3-stage (bulk, absorption, float)
CHISEN 140Ah Lead-Acid Battery Range
CHISEN Battery manufactures 140Ah-class lead-acid batteries in multiple technologies:
- CHISEN EVF Series (12V): 135–150Ah — electric vehicles, solar storage
- CHISEN AGM VRLA Series: 130–150Ah — UPS, backup power
- CHISEN GEL VRLA Series: 130–150Ah — solar cycling applications
All CHISEN 140Ah batteries carry CE, ISO9001, ISO14001, and TUV Rheinland certifications. OEM and custom branding available for volume orders.
Contact CHISEN Battery — Get a Custom Quote
Are you looking for a reliable lead-acid battery manufacturer for your solar, UPS, or e-bike project? CHISEN Battery has supplied businesses in 60+ countries with OPzV tubular GEL, AGM VRLA, and e-bike batteries.
Jack Chen | Export Department
Tel/WhatsApp: +86 131 2666 8999
Email: jack@chisen.cn
Website: www.chisen.cn
About CHISEN Battery
CHISEN Battery is a specialized manufacturer of OPzV tubular GEL batteries, AGM VRLA batteries, and lead-acid batteries for solar storage, UPS, telecom, and e-bike applications. With 8 global factories, 70 million kVAh annual production capacity, and certifications including CE, ISO9001, ISO14001, UKAS, and TUV Rheinland, CHISEN serves distributors, EPC contractors, and OEMs in 60+ countries.