DATASHEET ULTRA 31/900/24V & ULTRA 31/1100/24V ENGINE START MODULE AVAILABLE NOW: MAXWELL 24-VOLT ENGINE START MODULE (ESM) FOR STARTING HEAVY DUTY DIESEL ENGINES Give your customers increased starting reliability and equipment uptime with the new 24-Volt Engine Start Module from Maxwell. Whether you build or maintain buses, bulldozers, off-road trucks, agricultural equipment, cranes, graders, pavers, feller-bunchers, or portable compressors, we’ve got you covered with the high current 24-Volt cranking capacity your customers need. Effectively eliminate jump-starts, lost productivity, drivers/operators on standby time, and equipment downtime due to weak batteries. Don’t leave starting to batteries. One Maxwell 24-Volt ESM takes over all engine cranking for engines up to 15 liters. And it provides high speed cranking from -40°F to +149°F (-40°C to +65°C), all the time, every time for hundreds of thousands of starts.* ULTRA 31/900/24V Engine Start Module ULTRA 31/1100/24V Engine Start Module For heavy duty vehicles and equipment with maximum engine size 12.5 liters For heavy duty vehicles and equipment with maximum engine size 15.0 liters FEATURES & BENEFITS* No lead. No acid. Improves overall system power performance Shock & vibration resistant Built-in overcharge protection Low total cost of ownership Cold weather reliability down to -40°F (-40°C) Faster cranking Industry standard BCI Group 31 form factor Recharges fully in less than 15 minutes (Initial charge is 30 minutes or less) Provides 900-1100 CCA1 4-year non pro-rated warranty Assembled in the USA * Lead acid batteries still power ECM/ECU. Results may vary. Additional terms and conditions, including the limited warranty, apply at the time of purchase. See the warranty details for applicable operating and use requirements. DATASHEET ULTRA 31/900/24V & ULTRA 31/1100/24V ENGINE START MODULE MAXWELL ENGINE START MODULE: PRODUCT SPECIFICATION COMPARISON SPECIFICATIONS ESM ULTRA 31/900/24V ESM ULTRA 31/1100/24V 12.5 L 15.0 L 900 CCA 1100 CCA 45.5 kW 50.7 kW Maximum engine size Cold cranking amps 1 Peak power 2 Input voltage (B+ terminal) 9.5 V - 32.0 V Output voltage 27.0 V max. (temperature dependent) Designed for heavy equipment environments -40°F to +149°F (-40°C to +65°C) Operating temperature 20 A max. (from battery when charging) < 10 mA (when fully charged - sleep mode) Current draw (on batteries) Recharge time 15 minutes BCI Group 31 13”L x 6 13/16” W x 9 7/16” H (330mm L x 173mm W x 240mm H) Dimensions Weight 7.8 kg (17 lbs) Shelf life 8.2 kg (18 lbs) 4 years FOOTNOTES 1. CCA = 28.5 V max. (temperature dependent) C x (Vmax - Vmin) T + C x ESR 2. Peak Power = V2max 4 x ESR ULTRA 31/900/24V C = 300 F (min.) Vmax = 27 V (for 0°C) Vmin = 14.4 V (per SAE) T = 3 seconds ESR = 0.004 Ohm (max.) ULTRA 31/1100/24V C = 340 F (min.) Vmax = 28.5 V (for 0°C) Vmin = 14.4 V (per SAE) T = 3 seconds ESR = 0.004 Ohm (max.) ESM 24V INSTALLATION DIAGRAMS All 24V System Split 12V/24V System See user manual for full installation details. Product dimensions are for reference only unless otherwise identified. Product dimensions and specifications may change without notice. Please contact Maxwell Technologies directly for any technical specifications critical to application. All products featured on this datasheet are covered by the following U.S. patents and their respective foreign counterparts: 6643119, 7295423, 7342770, 7352558, 7384433, 7440258, 7492571, 7508651, 7580243, 7791860, 7791861, 7859826, 7883553, 7935155, 8072734, 8098481, 8279580, and patents pending. * CONTACT US Maxwell Technologies, Inc. Global Headquarters 3888 Calle Fortunada San Diego, CA 92123 Phone: +1 (858) 503-3300 Fax: +1 (858) 503-3301 ESM Sales Support: +1 (877) 511-4324 ESM Technical/Warranty Support: +1 (888) 890-3337 Email: [email protected] Web: maxwell.com/esm MAXWELL TECHNOLOGIES, MAXWELL, MAXWELL CERTIFIED INTEGRATOR, ENABLING ENERGY’S FUTURE, BOOSTCAP, C CELL, D CELL and their respective designs and/or logos are either trademarks or registered trademarks of Maxwell Technologies, Inc. and may not be copied, imitated or used, in whole or in part, without the prior written permission from Maxwell Technologies, Inc. All contents copyright © 2015 Maxwell Technologies, Inc. All rights reserved. No portion of these materials may be reproduced in any form, or by any means, without prior written permission from Maxwell Technologies, Inc. Document number: 3000915-EN.2 maxwell.com/esm