Description
MK Battery / Deka® 8G31-DEKA | 12 V ~97 Ah Gel Deep-Cycle Battery
Overview
The Deka® 8G31-DEKA is a sealed, valve-regulated gel deep-cycle battery engineered for renewable energy, mobility and standby power applications. With a rated capacity of approximately 97.6 Ah at the 20-hour rate and up to ~108 Ah at the 100-hour rate, it delivers reliable performance in demanding duty-cycle environments. :contentReference[oaicite:1]{index=1}
Proudly Made in the USA
Every MK Battery / Deka® 8G31-DEKA is built by East Penn Manufacturing Co. in Lyon Station, Pennsylvania—right here in the USA.
These batteries are crafted under one roof with decades of American engineering expertise, using a blend of U.S. and globally sourced materials to deliver unmatched reliability, consistency, and quality.
When you choose Deka®, you’re supporting American manufacturing and dependable power you can trust.
Key Features
- Sealed gel construction — maintenance-free and non-spillable
- Rated ~97.6 Ah @ C/20 and ~108 Ah @ C/100 for deep-cycle performance :contentReference[oaicite:2]{index=2}
- Rugged polypropylene case and lead-calcium alloy plates for enhanced durability
- Safe for indoor or mobile installations with sealed gel technology allowing any mounting orientation
- Manufactured in the USA by East Penn Manufacturing Co.
Applications
- Off-grid and hybrid solar energy storage banks
- Telecom, SCADA systems, and remote monitoring backup power
- Mobility power (RV, marine) and standby use where reliable sealed deep-cycle service is needed
- Energy-storage banks in commercial and industrial installations requiring long life and safe service
Technical Specifications
| Model | 8G31-DEKA |
|---|---|
| Nominal Voltage | 12 V |
| Capacity @ C/20 | 97.6 Ah :contentReference[oaicite:3]{index=3} |
| Capacity @ C/100 | 108 Ah :contentReference[oaicite:4]{index=4} |
| Weight | 70 lb (31.8 kg) :contentReference[oaicite:5]{index=5} |
| Dimensions (L × W × H) | 12.93″ × 6.75″ × 9.34″ (329 × 171 × 237 mm) :contentReference[oaicite:6]{index=6} |
| Plate Alloy | Lead-Calcium |
| Container / Cover | Polypropylene :contentReference[oaicite:7]{index=7} |
| Operating Temperature Range | –76 °F (–60 °C) to +140 °F (60 °C) :contentReference[oaicite:8]{index=8} |
| Charge Voltage (20 °C) | Cycle: 2.30–2.35 VPC · Float: 2.25–2.30 VPC :contentReference[oaicite:9]{index=9} |
| Country of Manufacture | USA (East Penn Manufacturing Co.) |
Specifications per MK Battery / Deka® 8G31-DEKA data sheet. :contentReference[oaicite:10]{index=10}
Design & Performance
The 8G31-DEKA leverages thixotropic gel electrolyte technology to immobilize sulfuric acid, eliminate stratification, and enhance cycle-life durability under deep-discharge duty. Its sealed gel design makes it suitable for indoor, mobile or stack-mounted configurations, while the heavy-duty case and premium plates support commercial-grade deep-cycle installations.
