put an end to jump-starts with the engine start module from maxwell

DATASHEET
ULTRA 31/900 ENGINE START MODULE
PUT AN END TO JUMP-STARTS WITH THE
ENGINE START MODULE FROM MAXWELL
Whether the medium duty trucks in your fleet are step vans, package cars, utility vehicles, lease/rental trucks or
food & beverage delivery trucks, Maxwell has the solution to your jump-start and stranded vehicle headaches.
Because of increased loads in today’s trucks - such as lift-gates, radios and lights, your batteries frequently do not
have the power needed to start your engine.*
Don’t leave starting to batteries. The ULTRA 31/900 Engine Start Module from Maxwell Technologies provides
high power for hundreds of thousands of starts. With a four-year non pro-rated warranty it has the durability to
start your truck consistently – potentially for the life of your truck.
Replace a battery or add the Engine Start Module to a Class 3-6 diesel truck for reliable starting from -40°F to
149°F (-40°C to +65°C)
FEATURES & BENEFITS*
Engine start reliability
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 -40oF (-40°C)
Faster cranking
Industry standard BCI Group 31 form factor
Recharges fully in less than 8 minutes
(Initial charge is 15 minutes or less)
Provides 900 CCA (3 second crank)
Long life - limited 4 year warranty
Assembled in the USA
Maxwell Technologies
ULTRA 31/900 Engine Start Module
*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 ENGINE START MODULE
MAXWELL ENGINE START MODULE: PRODUCT SPECIFICATIONS COMPARISON
ULTRA 31/900
ESM123000-31
Vehicle Type
Medium Duty (Class 3-6)
Heavy Duty (Class 7-8)
Diesel Engine Size
4 L - 9.9 L
10 L - 16 L
Voltage
Input voltage (B+ Terminal) 10 - 18 V
Output voltage (S+ Terminal) 15.0 - 16.2 V
Input voltage (B+ Terminal) 10 - 18 V
Output voltage (S+ Terminal) 15.0 - 16.2 V
Cold cranking amps 1
900 CCA (3 second crank)
1800 CCA (3 second crank)
Peak power 2
16.4 kW
32.8 kW
Recharge time
8 minutes (recharge from battery at 20 A)
15 minutes (recharge from battery at 20 A)
Dimensions
BCI Group 31
13”L x 6 13/16” W x 9 7/16” H
(330mm L x 173mm W x 240mm H)
BCI Group 31
13”L x 6 13/16” W x 9 7/16” H
(330mm L x 173mm W x 240mm H)
Terminals
SAE 3/8”-16 UNC, 3 each
SAE 3/8”-16 UNC, 3 each
Environmental
Designed for truck battery box environments
Designed for heavy truck battery box environments
Weight
16 lbs (7.3kg)
21 lbs (9.5kg)
Current draw
25 A max. (from battery when charging)
<10mA (when fully charged)
25 A max. (from battery when charging)
<10mA (when fully charged)
INSTALL THE ULTRA 31/900 IN JUST 6 EASY STEPS
NOTES
C x ( Vmax - Vmin )
T + C x ESR
1. Disconnect cable(s) connecting the batteries to the starter, and
remove one battery.
1. CCA =
2. Install the ULTRA 31/900 and connect the existing cable(s) from
the Starter Solenoid to the S+ terminal of the ULTRA 31/900. 3
2. Peak Power =
3. Connect Cable from the primary Battery Positive terminal to the
B+ terminal of the ULTRA 31/900.
4. Connect the negative battery cable to the B- terminal of the
ULTRA 31/900.
5. Initial Charge - The ULTRA 31/900 takes up to 15 minutes for an
initial charge (8 minutes thereafter).
6. See the ESM Installation Video at:
http://www.maxwell.com/esm under the Features tab.
V2max
4 x ESR
3. T he vehicle starter solenoid must be the only connection to the
ULTRA 31/900 S+ terminal. May require new wire to connect cab
loads/alternator to batteries.
Sample values below are for ULTRA 31/900 Engine Start Module:
C = 500 F (min.)
T = 3 seconds
Vmax = 16.2 V (for 0°C)
ESR = 0.004 Ohm (max.)
Vmin = 7.2 V (per SAE)
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.
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Document number: 3000489.1
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