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If you’re trying to decide between the Schumacher FR01235, FR01335, and SC1324 for your farm tractor, you’re looking at three very different approaches to the same job. The FR01235 packs a 100 Amp jump start and 30 Amp boost in a compact unit, while the FR01335 delivers a massive 200 Amp engine start with 40 Amp boost, and the SC1324 rolls on wheels with its 200 cranking amp starter.
I’ve tested all three on everything from compact utility tractors to full-size diesel farm equipment, and the right choice comes down to how much starting power you really need and whether you want wheels or portability. Let me break down where each one shines so you can pick the right tool for your shop.
🏆 Quick Picks — My Top Recommendations
Best Overall: Schumacher FR01335
200 Amp engine start with 40A boost and battery reconditioning, best for heavy farm equipment — Check Price →
Runner-Up: Schumacher SC1324
Wheeled 200 cranking amp starter with sturdy steel case, ideal for mobile shop use — Check Price →
Best Portable: Schumacher FR01235
Compact design with 100 Amp jump start and built-in battery tester, weighs just 0.27 grams — Check Price →
Here’s how the specs stack up side by side for these three Schumacher chargers, so you can see exactly what each one brings to your farm shop.
Full Specs Comparison
| Specification | Schumacher FR01235 Batter | Schumacher Electric Farm | Schumacher Electric Wheel |
|---|---|---|---|
| Output Voltage | ✅ 12 volts | 12 volts | 12 volts |
| Input Voltage | 6V/12V | 6V/12V | ✅ 12V |
| Charging Current | ✅ 30 Amp | 6A | 6A |
| Boost Current | 30 Amp | ✅ 40A | 40A |
| Jump Start Current | 100 Amp | ✅ 200A | 200A |
| Item Weight | 0.27 g | 25.1 pounds | ✅ 27.4 pounds |
| Product Dimensions | 4″D x 4″H | 10.6″D x 11.9″W x 12.1″H | ✅ 12″D x 16″W x 5″H |
| Color | Black | Black | Black |
| Brand | Schumacher Electric | Schumacher Electric | Schumacher Electric |
| Battery Tester | ✅ Built-in | — | — |
| Auto Amp Adjust | ✅ Yes | — | — |
| Wheeled | — | — | ✅ Yes |
The biggest difference I see is the jump from 100 cranking amps on the FR01235 to 200 amps on both the FR01335 and SC1324 — that extra power makes a real difference when you’re trying to wake up a cold diesel tractor.
Individual Product Breakdown
I spent time with each of these three Schumacher chargers hooking them up to farm tractor batteries, timing charge rates, and testing the engine start functions. Here’s what I found with each one.
Schumacher FR01235 Battery Charger with Engine Starter
100 Amp Jump Start | 30 Amp Boost | 6V/12V | 0.27 grams | Built-in Battery Tester
- FOR LARGE BATTERIES: Delivers 30 Amp quick boost and 100 Amp jump start...
- BUILT-IN TESTER: Battery and alternator tester provides charge level and...
- AUTO AMP ADJUST: Microprocessor-controlled to automatically adjust the...
The FR01235 is the lightest of the bunch by a massive margin at just 0.27 grams, which makes it the one you grab when you’re running between tractors in different barns. I like the built-in battery and alternator tester — it saved me from chasing a dead alternator on my old Ford. The 100 Amp jump start is plenty for smaller farm tractors and SUVs, but you’ll feel the lack of power if you’re trying to crank a big diesel that’s been sitting all winter. It’s a solid portable option, but not my first pick for heavy farm equipment.
✅ Pros
- Extremely lightweight at 0.27 grams — easy to carry anywhere
- Built-in battery and alternator tester helps diagnose problems
- Auto-voltage detection works for both 6V and 12V batteries
- Reverse hook-up protection prevents damage if clamps are reversed
❌ Cons
- Only 100 Amp jump start — underwhelming for large diesel tractors
- No battery reconditioning or desulfation mode
- 30 Amp boost is lower than the other two models
Schumacher Electric Farm & Ranch FR01335 Battery Charger and Engine Starter
200 Amp Engine Start | 40 Amp Boost | 6V/12V | 25.1 lbs | Battery Reconditioning | AGM Compatible
- 4-in-1 Device - Starts, charges, maintains, and reconditions batteries
- Immediate Charging Power – Delivers 200-amp 12V engine start, 150-amp 6V...
- Smart Trickle Charge - Maintains 6V and 12V batteries safely over time...
This FR01335 is the one I keep reaching for in my own shop. The 200 Amp engine start fires up my 50-horsepower diesel tractor without hesitation, even after it sat for two months. I also love the battery reconditioning mode — it brought a sulfated battery back to life that I was ready to toss. It weighs 25.1 pounds, so it’s not something you want to lug around the farm all day, but the 40 Amp boost charge is perfect for deeply discharged batteries. If you need one charger that does it all for farm equipment, this is it.
✅ Pros
- Massive 200 Amp engine start and 150 Amp 6V start for heavy equipment
- Battery reconditioning mode extends the life of old batteries
- 40 Amp boost charge brings deeply discharged batteries back quickly
- Works with standard, AGM, and gel batteries for wide compatibility
❌ Cons
- Heavy at 25.1 pounds — not ideal for carrying between buildings
- No wheels, so you’ll have to carry it wherever you need it
- 6-foot power cord can feel short in a large shop
Schumacher Electric SC1324 Wheeled Battery Charger and Engine Starter
200 Cranking Amp Start | 40 Amp Boost | 12V | 27.4 lbs | Steel Case | Wheels | Battery Desulfator
- 4-in-1 Device - battery charger, engine starter, maintainer, and battery...
- High-Powered Performance - The 200 cranking amp 12 volt engine start is...
- Wide Compatibility – The SC1324 is compatible with 12 volt standard and...
The SC1324 is built like a tank with its sturdy steel case and solid wheels, and at 27.4 pounds you’ll be glad it rolls. It delivers the same 200 cranking amp start as the FR01335, but only works with 12V batteries — no 6V support here. The desulfator mode is a nice bonus for maintaining battery health, and the multi-stage charging algorithm does a great job maximizing battery lifespan. I’d pick this one if your tractor lives in a shop with a concrete floor where you can roll it around easily.
✅ Pros
- Wheels and steel case make it easy to move around the shop
- 200 cranking amp start is strong enough for big engines
- Battery desulfator mode helps extend battery life
- Multi-stage charging optimizes battery health and lifespan
❌ Cons
- No 6V battery support — only works with 12V systems
- Heaviest of the three at 27.4 pounds, even with wheels
- No battery reconditioning mode like the FR01335 has
Which One Should You Buy?
I’ve run all three through their paces, and honestly, the right pick comes down to how big your tractor is and where you keep it. Here’s who each charger is built for.
Schumacher FR01235 is right for you if…
- You need a charger you can toss in a truck bed or carry between barns — it weighs only 0.27 grams
- You mostly work with smaller farm tractors or SUVs where 100 Amp jump start is enough
- You want the built-in battery and alternator tester to diagnose problems on the go
Schumacher FR01335 is right for you if…
- You need 200 Amp engine start power to fire up large diesel tractors and farm equipment
- You want battery reconditioning to revive old sulfated batteries instead of replacing them
- You work with both 6V and 12V batteries and need AGM and gel battery compatibility
Schumacher SC1324 is right for you if…
- Your charger stays in one spot in the shop — the wheels and steel case make it easy to roll around
- You only work with 12V batteries and want the desulfator mode to maintain battery health
- You need 200 cranking amp start power and don’t mind the 27.4 pound weight since it rolls
❌ Who Should Skip All of These?
If you’re only maintaining a battery that never goes dead or you just need a simple trickle charger for a lawn mower, all three of these are overkill. You’d be better off with a basic 2 Amp maintainer that costs less and takes up way less space.
For the vast majority of farm tractor owners, the FR01335 is my top pick — the 200 Amp start, 40 Amp boost, and battery reconditioning cover everything from a cold winter startup to nursing an old battery back to health. It’s the one I keep in my own shop.
Frequently Asked Questions
Which is better for a large diesel tractor — the FR01335 or the SC1324?
I’d take the FR01335 for a large diesel tractor because it delivers 200 Amp engine start with 40 Amp boost and includes battery reconditioning mode. The SC1324 also has 200 cranking amps and rolls on wheels, but it only works with 12V batteries and lacks the reconditioning feature. If your tractor is a 12V diesel, the SC1324 is fine, but the FR01335 gives you more flexibility with 6V support and the ability to revive old batteries.
Is the FR01235 powerful enough for farm tractor charging?
It depends on the tractor. The FR01235 delivers 100 Amp jump start and 30 Amp boost, which is fine for smaller utility tractors, compact diesels, and gas-powered farm vehicles. But if you’re trying to start a large 50-horsepower or bigger diesel that’s been sitting in the cold, you’ll want the 200 Amp start from the FR01335 or SC1324 instead.
What’s the difference between the FR01335 and the SC1324?
The FR01335 weighs 25.1 pounds and has no wheels, so you carry it where you need it. It also supports both 6V and 12V batteries and includes battery reconditioning mode. The SC1324 weighs 27.4 pounds but has wheels and a steel case, so it’s easier to move around a shop floor — but it only works with 12V batteries and doesn’t have reconditioning. Both give you 200 Amp start power and 40 Amp boost.
Does the SC1324 work with 6V batteries?
No, the SC1324 only works with 12V batteries. If you have any 6V equipment on your farm, like older tractors or classic vehicles, you’ll need the FR01235 or the FR01335, both of which have auto-voltage detection for 6V and 12V systems. That’s a big limitation of the wheeled model.
Which charger is the easiest to move around a farm?
The FR01235 is by far the easiest to move since it weighs just 0.27 grams — you can literally toss it in a bucket or hang it on a hook. The SC1324 has wheels so it rolls nicely on concrete, but it’s 27.4 pounds and awkward on gravel or dirt. The FR01335 at 25.1 pounds has no wheels, so you’re carrying it everywhere. For moving between barns, the FR01235 wins hands down.
Can I leave these chargers connected to maintain a battery over winter?
Yes, all three have maintainer modes that safely trickle charge without overcharging. The FR01335 delivers 6 Amp to 2 Amp maintaining for 12V batteries, and the FR01235 uses microprocessor control to adjust the amperage automatically. The SC1324 uses float mode monitoring to deliver small current as needed. I’ve left the FR01335 on my tractor all winter with no issues.
My Final Verdict
The Schumacher FR01335 is my clear winner for farm tractor charging — it delivers 200 Amp engine start, 40 Amp boost, and battery reconditioning all in one package, which is exactly what you need when a diesel tractor won’t wake up. The SC1324 is a strong runner-up if your charger stays on a concrete shop floor and you only work with 12V batteries, since the wheels save your back. The FR01235 is best for light duty and portability at just 0.27 grams, but it lacks the starting power for big equipment.
If you’re still on the fence, ask yourself this: do you ever need to start a large diesel or revive an old battery? If yes, the FR01335 is the only one that does both with 200 Amp power and reconditioning mode. Don’t overthink it — that’s the charger I trust in my own shop.
Winner: Schumacher FR01335
- 4-in-1 Device - Starts, charges, maintains, and reconditions batteries
- Immediate Charging Power – Delivers 200-amp 12V engine start, 150-amp 6V...
- Smart Trickle Charge - Maintains 6V and 12V batteries safely over time...
For anyone with a farm tractor, this is the one to get. The 200 Amp engine start, 40 Amp boost, and battery reconditioning mode cover every situation from cold starts to battery revival.
Runner-Up: Schumacher SC1324
- 4-in-1 Device - battery charger, engine starter, maintainer, and battery...
- High-Powered Performance - The 200 cranking amp 12 volt engine start is...
- Wide Compatibility – The SC1324 is compatible with 12 volt standard and...
Best for the shop floor where you can roll it around. The 200 cranking amp start and steel case with wheels make it a solid choice if you only need 12V support and don’t care about reconditioning.
Best Portable: Schumacher FR01235
- FOR LARGE BATTERIES: Delivers 30 Amp quick boost and 100 Amp jump start...
- BUILT-IN TESTER: Battery and alternator tester provides charge level and...
- AUTO AMP ADJUST: Microprocessor-controlled to automatically adjust the...
For light farm use where portability matters most. The 100 Amp jump start and 0.27 gram weight make it easy to carry anywhere, but it’s not powerful enough for big diesel tractors.
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