D31A-120D
AGM Mobile Deep Cycle Battery
Discover® VRLA AGM Mobile Deep Cycle batteries are built for mobile applications that undergo frequent vibration and require large power demands such as RV, Caravan, Marine and Home Medical Equipment. The batteries are safe, nonspillable, maintenance-free and are trusted by boat and recreational vehicle owners.
MECHANICAL SPECIFICATIONS
| Industry Reference | BCI: 31 | |
| Length A (in/mm) | 13.0 | 330 |
| Width B (in/mm) | 6.8 | 172 |
| Height C (in/mm) | 8.5 | 216 |
| Total Height D (in/mm) | 8.6 | 218 |
| Weight (lbs/kgs) | 71 | 32 |
| Terminal * | F10M8 | |
| Technology | AGM | |
NOTE 1: Dimensions have a ±2 mm (0.08 in) tolerance. Weights may vary.
NOTE 2: Refer to terminal guide on website for torque values.
ELECTRICAL SPECIFICATIONS
| Voltage (V) | 12 | |
| Internal Resistance (mΩ) | 3.75 | |
| Short Circuit (A) (20°C / 68°F) | 3200 | |
| Self-Discharge (20°C / 68°F) | 2-3% per month | |
| Charge Temperature | Min: -10°C (14°F) | Max: 50°C (122°F) | |
| Discharge Temperature | Min: -40°C (-40°F) | Max: 50°C (122°F) | |
| Storage Temperature | -20°C (-4°F) to 60°C (140°F) | |
NOTE 3: Extra considerations must be given when designing systems for use at maximum temperatures.
NOTE 4: Internal Resistance is approximate.
PERFORMANCE SPECIFICATIONS
| Amp Hours (AH) | ||
|---|---|---|
| 5 HR | 10 HR | 20 HR |
| 90 | 110 | 120 |
Capacities: 1.75VPC at 30°C/86°F
| Minutes of Discharge | Cranking Amps | ||
|---|---|---|---|
| @25A | @75A | CA (0°C/32°F) | CCA (-18°C/0°F) |
| 215 | 940 | 785 | |
FEATURES
ENHANCED ALLOYS
- Thick plates with graphite enhanced alloys deliver maximum runtime over operational life
AUTOMATED THROUGH-THE-PARTITION WELD
- Improved intercell weld consistency, and less lead waste than manual welding process
- Supports higher current loads and lowers internal resistance
POLYPROPYLENE CASE
- High heat resistance and durability (key industry models)
- High pressure relief valves reduce water loss and extend life
- Integrated flame arrestors prevent fire and explosion
BENEFITS
ENHANCED RUNTIME
- Consistent amp hour capacity over lifetime
- High operational voltage over lifetime
EXTENDED SERVICE LIFE
- Low self-discharge rates prolongs shelf life
- 99% gas recombination extends life
- Long life superior to general purpose cyclic batteries
EXTREME TEMPERATURES
- Wide ambient operating temperature
- Low temperature operation superior to FLA / Gel batteries
RELIABLE AND SAFE
- Valve Regulated Lead-Acid, AGM
- Maintenance-free, nonspillable, no-gassing
- Spark and explosion tested (SAE J1495)
CERTIFIED QUALITY
Discover® manufacturing facilities are fully certified to ISO 9001/14001 and OSHA 18001 standards.
Designed in accordance with and published in compliance with applicable standards, including:
- IEC 60896-21/22
- BS EN 60254-1:2005
- UL, CE Health Safety Certified
SHIPPING CLASSIFICATION
- Classified as a nonspillable battery
- Without restriction for transport by Sea (IMDG amendment 27)
- Without restriction for transport by Air (IATA/ICAO provision 67)
- Without restriction for transport by Ground (STB, DOT-CFR-HMR49)
Cycle Life Characteristics
Temperature Effects on Capacity
Charge Characteristics
Discharge Characteristics
- Due to self-discharge characteristics of lead acid battery technologies, batteries should be charged within 6 months of storage to ensure optimum performance, prevent sulphation and permanent capacity loss.
- Charge profile recommendations correspond to battery voltages at 25°C (77°F). For temperatures below, adjust +5mVPC/°C (+3mVPC/°F). Temperatures above, adjust -5mVPC/°C (-3mVPC/°F). Temperature compensated charging helps ensure optimum battery runtime and life performance.
- Charge until battery voltage reaches 2.45VPC and hold until current tapers down to 0.01C20 amps. Battery is fully charged under these conditions and charger should be disconnected or switched to “float” voltage. For standby / float use, a constant charge voltage of 2.25-2.30VPC is also acceptable. Hold until the battery seeks its own current level and maintain itself in a fully charged condition.
Discover® reserves the right to make adjustments to this publication at any time, without notice or obligation. Data in this publication are for reference use only and models may vary from shown. It is the responsibility of the reader of this information to verify any and all information presented herein. For more information contact us at info@discoverbattery.com
