Specializing in production, R&D and sales of the full line of lead acid battery, our production capacity has reached more than 3 million KVAH per year. We produce industrial lead acid batteries, such as VRLA battery, Automotive battery, Motorcycle battery, Motive power battery, and various plates thereof. All batteries are widely used in UPS, Power stations, Solar power systems, Telecommunications, Vehicles, and boats.
With advanced production lines and testing devices, we have established a complete quality management system certified by ISO9001, ISO14001, CE, ROHS, and OHSMS18001. We maintain quality and environmental protection as our top priorities.
KOYAMA® Motorcycle batteries are filled and heat sealed at the factory for simple installation and professional performance.

1. Maintenance Free VRLA TYPE
Factory Activate and sealed 12V-VRLA AGM & Gel Battery. Never needs refilling. Ideal for motorcycles, scooters, and ATVs.

2. Maintenance Free AGM Batteries
The first with AGM technology. Features 6 pack acid bottle and valve-regulated technology for consistent power.

3. High Performance 12-volt Battery
Produced with lead-calcium technology, improving performance and reducing maintenance with a longer life span.

4. Conventional Battery
Designed for long-lasting power and convenience. Transparent container makes electrolyte checks easy and resists corrosion.
| Model | Voltage | Capacity | Dimensions (mm) | CCA (-18ºC) |
|---|---|---|---|---|
| YTX4L-BS | 12V | 4Ah | 113*70*85 | 80 |
| YTX5L-BS | 12V | 5Ah | 113*70*108 | 86 |
| YTX7L-BS | 12V | 7Ah | 113*70*132 | 86 |
| 12N9-BS | 12V | 9Ah | 137*76*134 | 85 |
| YTX14-BS | 12V | 12Ah | 150*87*145 | 200 |






