Description
MK Battery / Deka 8A8D — 12V 245Ah (C/20) Sealed AGM Deep-Cycle Battery (BCI Group 8D)
Overview
The Deka 8A8D (MK Battery) is a USA-made, valve-regulated AGM deep-cycle battery engineered for demanding solar, marine, RV, and industrial applications. With 245Ah at the 20-hour rate and rugged, non-spillable construction, it delivers reliable energy storage where vibration resistance, maintenance-free operation, and flexible mounting are critical.
Key Features
- Sealed VRLA AGM: maintenance-free, non-spillable design with self-sealing vents
- Deep-cycle plates sized for repeated discharge/charge cycling
- Forged terminals & bushings; polypropylene case/cover
- Wide operating temperature range: −40 °F to 140 °F (−40 °C to 60 °C)
- Rated non-spillable for air/ground transport (ICAO/IATA/DOT)
Applications
- Off-grid solar, hybrid power, and battery backup systems
- Marine house banks, RV house loads, liftgates, and industrial carts
- Telecom/SCADA power, remote monitoring, and lighting
Technical Specifications
| Model | 8A8D (a.k.a. 8A8D-LTP-DEKA) |
|---|---|
| Nominal Voltage | 12 V |
| Capacity | 245 Ah @ C/20 • 250 Ah @ C/100 • 197 Ah @ C/5 |
| BCI Group Size | 8D |
| Charge Voltage @ 77 °F (25 °C) | Cycle: 13.8–14.6 V • Float: 13.4–13.6 V |
| Operating Temperature | −40 °F (−40 °C) to 140 °F (60 °C) |
| Case / Cover | Polypropylene |
| Terminals | S (SAE/auto-post); other posts available on variants |
| Dimensions (L × W × H) | 20.87″ × 10.97″ × 9.62″ (530 × 279 × 244 mm) nominal |
| Weight | ≈ 163 lb (74 kg) |
| Transport | Rated non-spillable (ICAO/IATA/DOT) |
| Country of Manufacture | USA (East Penn Manufacturing) |
Design & Operation
Absorbed Glass-Mat separators immobilize electrolyte for leak-proof service and strong vibration resistance. Use cycle/float voltages shown above and temperature compensation per system charger guidelines to maximize service life. AGM design permits installation in various orientations (not upside-down).
Proudly Made in the USA
Every MK Battery / Deka 8A8D is built by East Penn Manufacturing Co. in Lyon Station, Pennsylvania 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.
