Description
MK Battery / Deka® 8G40-DEKA | 12 V 40 Ah Gel Deep-Cycle Battery (Non-Spillable)
Overview
The Deka® 8G40-DEKA is a sealed, maintenance-free GEL deep-cycle battery designed specifically for solar, mobility, telecom, and backup power applications. With a nominal capacity of approximately 40 Ah @ C/20 and 48 Ah @ C/100, this valve-regulated gel battery offers non-spillable, indoor-safe performance in compact, high-reliability systems.
Domestic sourcing matters—here’s how this product qualifies:
Proudly Made in the USA
Every MK Battery / Deka® 8G40-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 U.S. and globally sourced materials to deliver dependability, consistency, and quality.
When you choose Deka®, you’re supporting American manufacturing and dependable power you can trust.
Key Features
- Valve-regulated gel (thixotropic gel electrolyte) design — sealed, maintenance-free, and no watering required.
- Rated ~40 Ah @ C/20; ~48 Ah @ C/100, ideal for compact deep-cycle applications.
- Non-spillable and safe for indoor, mobile, or stacked installations.
- Very low self-discharge rate (~2% per month), making it well-suited for solar and standby use.
- Manufactured in the USA by East Penn Manufacturing Co.
Applications
- Off-grid solar energy storage and hybrid battery banks.
- Telecom, SCADA backup power, remote monitoring systems.
- Marine, RV and mobility house-bank applications where sealed, safe batteries are required.
- Standby or intermittent deep-cycle applications with space or weight constraints.
Technical Specifications
| Model | 8G40-DEKA |
|---|---|
| Nominal Voltage | 12 V |
| Capacity @ C/20 | 40 Ah |
| Capacity @ C/100 | 48 Ah |
| Weight | ≈ 31.5 lb (14 kg) |
| Dimensions (L × W × H) | 7.76″ × 6.62″ × 6.88″ (197 × 168 × 175 mm) |
| Case Material | Polypropylene (sealed gel monobloc) |
| Operating Temperature Range | –76 °F (–60 °C) to +140 °F (60 °C) |
| Country of Manufacture | USA (East Penn Manufacturing Co.) |
Specifications sourced from MK Battery / Deka® official datasheet and distributor listings.
Design & Performance
The 8G40-DEKA incorporates thixotropic gel electrolyte technology that immobilizes the acid and prevents stratification, ensuring consistent discharge and recharge performance. Its sealed, maintenance-free construction allows flexible installation in indoor, mobile, or stacked systems with minimal supervision—ideal where reliability, safety, and compact form factor are key.
