What battery size does the John Deere 4455 use?
The John Deere 4455 uses two 12-volt batteries. The listed battery spec is 925 CCA, and a common replacement choice is a heavy-duty BCI Group 31 battery rated around 925 to 950 CCA. For a simple owner answer, use two 12V Group 31 batteries with at least 925 CCA each.
John Deere 4455 Battery Size: Group 31
The John Deere 4455 uses two 12V batteries. The factory-style spec is 925 CCA, while many common Group 31 replacement batteries are rated around 950 CCA.
About 90 Ah on many Group 31 John Deere replacement batteries
Common Replacement Type
Heavy-duty wet charged lead-acid battery; AGM is acceptable if the size, voltage, CCA, terminals, and fitment match
Ground
Negative ground
Charging System
Alternator
Alternator Output
120 amps
Best simple answer: the John Deere 4455 takes two 12V Group 31 batteries. Use batteries rated at least 925 CCA each. A 950 CCA Group 31 replacement is also a strong match.
Best Replacement Battery for a John Deere 4455
For most owners, the best replacement target is a BCI Group 31 12-volt battery with at least 925 CCA. A common John Deere-style replacement battery is rated around 12V, 90 Ah, 950 CCA, 31 BCI.
Replacement Target
Recommended Spec
Why It Matters
Battery group
BCI Group 31 / 31 BCI
This is the common heavy-duty battery group used for large tractors, trucks, and farm equipment.
Voltage
12V
The John Deere 4455 uses 12-volt batteries.
CCA
925 CCA minimum target
The 4455 is a large diesel tractor and needs strong cold cranking power.
Common upgraded replacement
950 CCA Group 31
A 950 CCA replacement is common and gives a small starting-power margin over the listed 925 CCA spec.
Capacity
About 90 Ah, depending on battery
Higher reserve capacity helps with repeated starting and electrical load.
Terminal layout
Match the existing battery and cable layout
The cables need to reach safely without stretching, crossing, or reversing polarity.
Owner tip: replace both batteries together if they are old. Mixing one fresh battery with one tired battery is a classic way to create weak starting and charging problems.
How Much CCA Does a John Deere 4455 Need?
The John Deere 4455 battery spec is 925 CCA. In the real world, many owners will use a Group 31 battery around 925 to 950 CCA. Going slightly higher in CCA is normally fine as long as the battery is still 12 volts and physically fits correctly.
CCA Strength Guide
Too weak for a John Deere 4455 650–750 CCA
Borderline / not ideal 800–850 CCA
Correct target range 925–950 CCA
Heavy cold-weather setup 1000+ CCA
Blunt verdict: do not cheap out with undersized batteries. A John Deere 4455 needs real cranking power, especially if it sits outside or starts in cold weather.
John Deere 4455 Electrical Specs
Electrical Spec
John Deere 4455
Electrical Ground
Negative ground
Charging System
Alternator
Alternator Output
120 amps
Battery Count
2 batteries
Battery Voltage
12 volts
Battery CCA
925 CCA listed spec
Common Replacement Battery
12V Group 31 battery around 925–950 CCA
Group 31 Battery Size for the John Deere 4455
A Group 31 battery is a heavy-duty commercial battery size commonly used in trucks, tractors, and larger farm equipment. It is a good fit for the John Deere 4455 because it provides the physical size, reserve capacity, and cold cranking power needed for a large diesel row-crop tractor.
Group 31 Battery
Best Fit
Heavy-duty size, strong CCA ratings, and the right class of battery for a large John Deere diesel tractor.
Smaller Low-CCA Battery
Avoid
May be cheaper, but usually gives weaker cranking power and worse cold-start reliability.
What Battery Should You Buy for a John Deere 4455?
Best Choice
Two 12V BCI Group 31 batteries rated at least 925 CCA each. A 950 CCA Group 31 battery is a strong replacement choice.
Acceptable
A higher CCA Group 31 battery, especially for cold climates, as long as voltage, fitment, terminal layout, and cable routing are correct.
Avoid
Cheap low-CCA batteries, mismatched old/new battery pairs, wrong terminal layout, weak cables, or batteries that cannot be clamped securely.
John Deere 4455 Battery Replacement Tips
Tip
Why It Matters
Replace both batteries together
A weak old battery can pull down the new one and cause hard starting.
Clean terminals and cable ends
Corrosion can make good batteries act weak.
Check cable condition
Bad cables cause slow cranking even when the batteries are new.
Match terminal layout
Wrong post position can make the cables difficult or unsafe to connect.
Secure the batteries properly
Loose batteries can damage trays, cables, terminals, and hold-downs.
Test alternator output after replacement
If the alternator is not charging properly, new batteries will go flat again.
Signs Your John Deere 4455 Battery Is Weak
A weak battery on a John Deere 4455 usually shows up as slow cranking, clicking, dim lights, hard starting, or repeated jump-starting. But do not blame the battery instantly. On older tractors, dirty terminals, poor grounds, weak cables, and starter issues can look exactly like a bad battery.
Symptom
Likely Cause
Slow cranking
Weak batteries, bad cable connection, poor ground, or starter draw issue.
Clicking sound
Low voltage, weak batteries, starter solenoid issue, or cable problem.
Starts with jump leads only
Batteries may be weak, undercharged, mismatched, or not holding charge.
New batteries keep going flat
Charging system issue, parasitic drain, poor alternator output, or bad cable connection.
Cranks slowly in cold weather
Low CCA batteries, thick oil, weak cables, poor ground, or worn battery condition.
Fast check: if the tractor still cranks slowly after installing two fresh Group 31 batteries, inspect the battery cables, grounds, starter, and alternator before blaming the new batteries.
John Deere 4455 Battery vs Alternator
The batteries start the tractor. The alternator keeps the batteries charged while the tractor is running. The John Deere 4455 uses an alternator charging system rated at 120 amps. If the alternator is weak, the tractor may start once and then slowly lose battery charge over time.
Part
Job
Common Problem
Batteries
Provide cranking power to start the tractor
Low CCA, bad cell, old age, poor charge retention
Alternator
Charges the batteries while running
Low charge output, bad regulator, worn belt, poor wiring
Cables and Grounds
Carry current between the batteries, starter, alternator, and frame
What battery size does a John Deere 4455 take?
The John Deere 4455 commonly uses two 12V BCI Group 31 batteries.
How many batteries does a John Deere 4455 have?
The John Deere 4455 uses two batteries.
What voltage battery does a John Deere 4455 use?
It uses 12-volt batteries.
How many CCA should a John Deere 4455 battery have?
The listed spec is 925 CCA. A 925 to 950 CCA Group 31 battery is the right target.
Can I use a 950 CCA battery in a John Deere 4455?
Yes. A 950 CCA Group 31 battery is a strong common replacement choice as long as it is 12 volts and fits correctly.
Can I use a higher CCA battery in a John Deere 4455?
Yes. Higher CCA is generally fine as long as the battery is the correct voltage, fits the tray, has the correct terminal layout, and connects safely.
Should I replace both John Deere 4455 batteries together?
Yes. Replacing both together is the smarter move because mismatched batteries can cause charging and starting problems.
Is a Group 31 battery good for a John Deere 4455?
Yes. Group 31 is the common heavy-duty replacement size to target for this tractor.
What is the alternator output on a John Deere 4455?
The John Deere 4455 uses a 120-amp alternator charging system.
Why does my John Deere 4455 crank slowly with new batteries?
If the batteries are new and correctly sized, check the cable ends, grounds, starter draw, alternator output, and battery connections.
John Deere 4455 Battery Size Summary
Battery group: BCI Group 31 / 31 BCI.
Number of batteries: 2.
Voltage: 12 volts.
Listed CCA: 925 CCA.
Common replacement: 925 to 950 CCA Group 31 battery.
Ground: negative ground.
Charging system: 120-amp alternator.
Best owner answer: buy two heavy-duty 12V Group 31 batteries rated at least 925 CCA each.
Last checked: John Deere 4455 battery count, voltage, CCA, electrical ground, alternator output, and Group 31 replacement battery specs verified against available John Deere replacement battery listings and tractor specification references.
