Can it be used to jump start a bus with 4 750 cca batteries 24v system ?

The DSR140 does not have the 24V engine start assist only the 25A charging feature for 24V. Please see our SC1352

Will this charge AGM batteries?

I have changed a few and each vehicle started up good

Can this charger two 12v batteries that are in sequence?

Yes, but they must be identical batteries and equal in voltage - meaning one battery cannot have 12.1V while the other battery has 11.1V they both must be equal in voltage

Will it charge a completely dead battery?

Yes, the DSR140 will charge a completely dead battery

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⚡ Charge like a pro, jump-start like a boss!

BUILT TO LAST MOVE - Rugged metal frame with compact wheels and retractable handle for ultimate portability
POWER WHEN IT COUNTS - 200 amps of jump-start muscle for SUVs, trucks & boats
TRUSTED PRO PERFORMANCE - Solid-state circuitry with silicone diodes ensures reliable, efficient operation every time
EXTENDED REACH NO LIMITS - 12-foot combined cable length for hassle-free access in any workspace
PRECISION CHARGING CONTROL - 135-minute timer and adjustable amperage for tailored battery care

The Schumacher DSR140 is a heavy-duty 12/24V manual battery charger and jump starter delivering 200 amps of engine start power, with 50A and 25A boost modes for rapid battery recovery. Featuring a 135-minute timer, adjustable amperage, and an easy-to-read amp meter, it offers precise control for professional-grade charging. Built tough with a metal frame, compact wheels, and retractable handle, plus a 12-foot cable reach, it’s designed for durability and convenience in garages and workshops. Trusted by pros, it uses advanced solid-state circuitry with silicone diodes for efficient, reliable performance.

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Manufacturer	Schumacher
Brand	Schumacher Electric
Product Dimensions	24.13 x 26.04 x 97.79 cm; 16.69 kg
Item model number	DSR140
Manufacturer Part Number	DSR140
Colour	Black
Assembly Required	No
Amperage	200 Amps
Voltage	24 Volts
Manufacturer	Schumacher
Item Weight	16 kg 700 g

Schumacher 200/50/25/10 Amp, 12/24V Manual Wheel Charger

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