Schumacher SPI 25 PRO User Manual

INSTRUCTION MANUAL
Model: SPI 25 PRO
The new SPI Pro series of electronic battery chargers has been designed to charge all kinds of lead-
acid, traditional or latest generation batteries and LiFePO4 lithium batteries. These chargers are
particularly suitable for daily use and for long-lasting maintenance charges.
All charging parameters are set using the charging function keys on the control panel. Depending on
the model, you can set:
- battery type (std: wet or gel, AGM: efb, start & stop or spiral, lithium: LiFePO4)
- charging current according to battery capacity
- the charging voltage according to the battery voltage
- the duty cycle to be carried out: slow, medium and fast charge; deep recovery charge, show
room function and power supply as a replacement to the battery.
Battery state diagnosis stage A1
The charger state of charge of the battery to be charged.
Charging phase:
"Recovery from deep discharge”
The charger starts using a pulse current until the battery has reached
optimal voltage and current levels to start the second charging phase.
Charging phase: " soft I”
Reduced constant current charge
Charging phase : " I”
Charge at constant current until the maximum battery voltage is reached.
Charging phase : " U0”
Charge at stabilized voltage until the current reaches minimum values.
Charging phase : " Recovery” *
Only with charger set on RECON: constant current deep charge phase and
increasing voltage to increase battery charging capacity.
Diagnosis of battery status: "A2”
The charger analyzes the state of efficiency of the charged battery.
Charging phase: " U”
The battery charge status is maintained at a reduced constant voltage.
Charging phase: " Up”
The battery charge is maintained with pulses of current (provided
constantly).
 * RECOVERY function (RECON): this charging mode allows you to recover wet 12volt batteries
that have been inactive for a long time and have acid stratification. This function acts physically
on the electrolytic solution of the battery so that it mixes again counteracting the stratification.
 SHOW ROOM function: the chargers are equipped with the show room function. This function
allows for operation of all the vehicel utilities during demonstrations in the dealership. (Only in
12V mode)
 SUPPLY function: the chargers are equipped with the supply function (power supply). This
function allows you to keep the memory of a vehicle active during battery changes or in all cases
where the battery is disconnected from the vehicle circuit. (Only in 12V mode)
 For battery analysis and error reporting the chargers have been designed to analyze the battery
status before and during charging and report any anomalies in connection between the charger
and the battery to be charged. Through the digital display an error code is displayed, so as to
quickly and easily verify the anomaly that has occurred.

Schumacher SPI 25 PRO Specifications

General

Model	SPI 25 PRO
Input Voltage	120V AC
Output Voltage	6V / 12V
Output Current	25A
Battery Capacity	Up to 100Ah
Type	Smart Battery Charger
Battery Type Compatibility	AGM, Gel
Safety Features	Overcharge Protection
Cable Length	6 ft

Summary

Battery State Diagnosis and Charging Phases

Recovery from Deep Discharge

Charger uses pulse current to reach optimal voltage for second phase.

Soft I Charge Phase

Reduced constant current charge.

Constant Current Charge Phase

Charge at constant current until max battery voltage is reached.

Stabilized Voltage Charge Phase

Charge at stabilized voltage until current reaches minimum values.

RECON Charge Phase

Constant current deep charge with increasing voltage for capacity.

Battery Status and Anomaly Reporting

Status U Charge

Battery charge status maintained at reduced constant voltage.

Status Up Charge

Battery charge maintained with pulses of current.

Error Reporting

Indicates anomalies like reverse polarity, low/high voltage, charger errors, or battery defects.

Important Safety Precautions

Intended Use and Restrictions

Charger for lead-acid/LiFePO4, not non-rechargeable or frozen batteries.

User and Child Safety

Not for persons with reduced capabilities; keep away from children.

Personal Protection and Hazards

Wear goggles, avoid sparks/flames, handle corrosive acid.

Operational Safety

Ensure ventilation, proper connection, correct placement, and authorized repair.

Charging Procedures

Connecting to Vehicle Battery

Steps to connect charger to a vehicle's battery for charging.

Charging Off-Vehicle Battery

Steps to connect charger to a battery not installed in a vehicle.

12V Battery Charging Parameters

STD Battery Charging (5A, 12.5A, 25A)

Charging parameters for STD (WET/Gel) batteries at different amperages.

AGM Battery Charging (5A, 12.5A, 25A)

Charging parameters for AGM batteries, including START&STOP/SPIRAL/EFB.

LiFePO4 Battery Charging (5A, 12.5A, 25A)

Charging parameters for LiFePO4 lithium batteries.

RECON Mode for WET/AGM

Special recovery mode for WET/AGM batteries with acid stratification.

24V Battery Charging Parameters

STD Battery Charging (5A, 12.5A)

Charging parameters for STD (WET/Gel) batteries at different amperages.

AGM Battery Charging (5A, 12.5A)

Charging parameters for AGM batteries, including START&STOP/SPIRAL/EFB.

Additional Charger Functions

Show Room Function

Keeps vehicle accessories operational during demonstrations (12V mode).

Power Supply Function

Maintains vehicle memory during battery changes (12V mode).

Charging Status Indicators

Explains LED indicators for battery charging and full charge states.

AC Supply Interruption Handling

Charger resumes cycle automatically after AC power restoration.

End of Charge Procedure

Disconnecting Charger

Steps to safely disconnect the charger from mains and battery.

Charger Protection Features

Safety Protections

Lists protections: sparks, short circuit, voltage compensation, overheat, reverse polarity.

Warranty and Service Information

Specifications

Input: 230V AC~50Hz; Output: 12V–25A / 24V–12.5A.

Warranty Terms and Conditions

Details the 2-year warranty, exclusions, and consumer/professional claims process.

Warranty, Repair, and Distribution Centers

Contact information for Schumacher Europe and Asia Pacific for service and distribution.