12.8V 9Ah Battery


Our 9Ah option boasts a full protective BMS with a hard case and sealed 0.187″ (4.75mm) Quick Connectors.
Weighing only 2.6lbs, it is great for portable fishing electronics, DIY power packs and LED lighting systems!

Our LFP batteries come loaded with all the safety and performance features you expect from Lynac in a compact, drop-in ready package. Designed with powerful simplicity in mind so you don’t have to carry any extra weight!

If each Lynac Lithium Technology battery product does not sufficiently meet the outlined performance specifications, a full refund is to be given once the product is returned, inspected, and proven faulty.
Seller assumes a 3-year manufacturer's warranty followed by a 4 year prorated warranty totalling 7 years.
Each product must be registered and proven to be used and maintained according to the recommended operational and maintenance parameters that are to be agreed upon at the time of installation.

To register a product Click Here

Best Paired Accessories

12V 3A LFP Smart Charger

In stock

Battery Spec's

Download PDF Datasheet

Product Model: 12.8V 9Ah
Rated Capacity: 9Ah
Nominal Voltage: 12.8Vdc
Cycle Life: 2000 @ 0.2C (100% DOD), 5000 @ 0.2C (80% DOD), 10000 @ 0.2C (50% DOD)
Dimensions: 6” x 2.55” x 3.7” (151 x 65 x 94mm)
Weight: 2.6lbs (1.2kg)
Battery Management System: Short Circuit, Current, Voltage, Cell Balancing
Cells: 18650 1800mAh LiFePO4, 4S5P
Charging Method: Constant Current - Constant Voltage (CC - CV): (0.2C to 14.4Vdc) - (14.4Vdc to 0.01C)
Voltage Limits: Charge: 14.6Vdc, Discharge: 10Vdc
Current Limits: Charge: 10Adc, Discharge: 10Adc
Temperature Limits: Charge 0 ~ 45°C, Discharge -20 ~ 55°C, Storage -20 ~ 55°C
Connectivity: Series: 4 Units (51.2Vdc 12Ah), Parallel: Unlimited* (12.8Vdc)
Terminal Connector: 0.187" (4.75mm) Quick Connect Male
Certifications: UN 38.3, UL1642, IEC626619-3600
Ingress Protection: IP65

The Lynac Advantage

Certified Grade A Cells

The highest grade cells give our LFP batteries the quality and performance that you would expect from your LFP battery leader.

Oversized BMS

Oversized Battery Management System (BMS) puts our LFP batteries above and beyond the standard, producing peak power output at maximum efficiency will ensure the highest performance and longest cycle life.

Designed in North America

Lynac Lithium is based in North America where we push the limits of battery innovation by designing and building quality products with your feedback!

Battery FAQ



Battery was designed to withstand splash damage and/or brief water submersion.



Battery offers half the weight of its lead-acid counterpart.


Shock Resistant

Battery is vibration tested and designed with solid casing to help withstand shock damage.

Have more questions? Get in touch with us and we will answer you ASAP!

More Products