Car Jump Starters and Battery Tools at Easy Life Markets
Easy Life Markets sells car jump starters and the battery tools that go with them: portable lithium jump packs from 400A to 4000A, smart chargers and maintainers, handheld battery testers and copper terminal clamps. These are the tools that get a car moving again after a flat battery and keep the battery healthy so it happens less often.
If you only buy one item, make it a jump starter sized for your engine. If the car sits for weeks at a time, add a maintainer. If the battery keeps going flat and you do not know why, buy a tester first and find out whether the battery, the starter or the charging system is to blame. Our current range covers all three jobs, and you can browse it below or in the wider electrical parts section of our auto parts store.
Car Jump Starters, Chargers, Testers and Clamps
A car battery does one big job and one quiet job. The big job is spinning the starter motor for a few seconds. The quiet job is keeping the clock, alarm and engine computer alive while the car is parked. Most battery problems come from one of three things: the battery is discharged, the battery is worn out, or the connection between the battery and the car is poor. The products in this category deal with each of those.
Portable car jump starters
A jump starter is a lithium battery pack with clamps. You connect it to the flat battery, switch it on and start the engine without a second car. Many packs also charge phones over USB. Our current range runs from the slim 400A car jump starter for small petrol engines up to the 4000A car jump starter listed for petrol engines up to 7.2L and diesel engines up to 5.5L.
Smart battery chargers and maintainers
A charger puts energy back into a battery from mains power. A smart charger watches the battery voltage and changes its output as the battery fills, then drops to a gentle float or maintenance mode. The VEVOR smart battery charger in our range has four separate 2A channels, so one box can look after four batteries at once.
Battery testers
A tester clips onto the battery terminals and reads its condition. Better testers also check what happens when the engine cranks and whether the alternator is charging. The BST100 car battery tester runs all three checks on 12V systems.
Battery terminal clamps
The terminal clamp is the metal clip that joins the battery cable to the battery post. A cracked, loose or corroded clamp causes the same symptoms as a flat battery. Our copper battery terminal clamp YD264 is listed by the supplier as pure copper with a galvanized finish.
Why Car Batteries Go Flat
A standard car battery is a 12V lead-acid unit. It is designed to give a short, heavy burst of current to start the engine, then get recharged by the alternator as you drive. It is not designed to be drained low and left there. Each deep discharge shortens its life.
The common causes of a flat battery are simple. Lights or accessories left on. Short trips that never give the alternator time to refill what the starter took. Cold weather, which slows the chemistry inside the battery and makes the engine harder to turn. Long periods parked, during which the alarm and computer draw a small current day and night. Age, because every battery slowly loses capacity. A faulty alternator or a parasitic drain from a wiring fault can also empty a good battery.
The fix depends on the cause. A battery that is just discharged needs a jump and a proper charge. A battery that is worn out needs replacing. A charging fault needs the alternator, belt or wiring checked. The right battery tools let you tell these apart and deal with the first one yourself. For the background on how jump starting works, the jump start article on Wikipedia explains the process and the history clearly.
How to Choose a Jump Starter for Your Engine
Car jump starters are the most popular items in this category, and they look alike. The numbers on the box tell you which one will start your car.
Peak amps and start current
Most packs quote a peak current, such as 400A, 800A or 1000A. Peak current is the highest burst the pack can deliver for a fraction of a second. Some listings also give a start current or cranking current, which is the steadier output during cranking and is usually about half the peak figure. The start current is the more useful number, so read both where they are given.
Engine size and fuel type
The most practical rating is the engine size the pack is listed for. Diesel engines have higher compression and need more current than petrol engines of the same size, so a pack rated for a 6.0L petrol engine may only be rated for a 3.0L diesel. Match the pack to your engine size and fuel, and choose the next size up if you live somewhere cold or your battery is old.
Battery capacity
Capacity is given in mAh or Wh. Higher capacity means more starts between charges and more power for charging phones. It does not on its own mean more starting power. A large mAh pack with a low peak rating can charge a phone many times and still struggle with a big diesel.
Safety features and extras
Look for clamps with reverse polarity protection, a clear charge display and a warning light or buzzer. Useful extras include USB outputs, an LED torch with flashing modes, a carry case and an air pump for tyres. Decide which extras you will really use, because they add size and weight.
Car Jump Starters Compared
This table compares the car jump starters in our current range using the figures the supplier lists on each product page. Where a figure is not listed, we have left it blank rather than guess.
| Model | Peak current | Start current | Capacity | Listed engine size | Good for |
|---|---|---|---|---|---|
| 400A jump starter | 400A | 200A | 20000mAh | Petrol up to 2.0L | Small cars, glovebox storage |
| M43 18800mAh jump starter | 600A | 300A | 18800mAh | Ordinary cars | A low-cost emergency pack |
| 800A jump starter | 800A | 400A | 28000mAh | Petrol up to 6.0L, diesel up to 3.0L | Family cars and SUVs |
| 1000A jump starter | 1000A | 20000mAh | Petrol up to 6.0L, diesel up to 3.0L | A full kit with laptop adapters | |
| 4000A jump starter | 4000A | 51.8Wh | Petrol up to 7.2L, diesel up to 5.5L | Big petrol and diesel engines | |
| 12V lithium jump starter | 16800 or 24000mAh | 12V vehicles | Choice of two capacities | ||
| 12V emergency jump starter | 39800 rating | 12V vehicles | Versions with display and air pump |
As a rough guide to sizing car jump starters, a small petrol hatchback is well served by a 400A to 800A pack. A large petrol SUV or a mid-size diesel should look at 1000A and above. A pickup, van or large diesel is where a high-output pack like the 4000A model earns its size. Always check the product page for the full listing.
Choosing a Battery Charger or Maintainer
A jump starter gets you going. A charger puts the battery back into good condition. After a jump, a short drive will not fully recharge a deeply flat battery, so a proper charge from the mains is the kinder option for the battery.
Check these points when you choose a charger:
- Battery chemistry. Lead-acid batteries come in flooded, AGM and gel types. Lithium iron phosphate (LiFePO4) batteries need a different charge profile. Choose a charger that lists your battery type, and select the right mode before charging.
- Charge current. A 2A output is gentle and suits maintenance and small batteries. Higher current charges a large car battery faster. A low current is usually better for a battery's long-term health.
- Number of outputs. A multi-bank charger looks after several batteries at once, which suits people with a car, a motorcycle and a mower, or a boat and a caravan.
- Automatic modes. A smart charger stops bulk charging when the battery is full and switches to maintenance, so it can stay connected for long periods.
The VEVOR GS120C-4 smart battery charger is titled by the supplier as an 8-amp charger, maintainer and desulfator, with four 2A channels and support for LiFePO4 and lead-acid batteries including AGM, gel and SLA. It suits garages that keep several vehicles or seasonal machines on charge through the off-season.
Test Before You Replace Anything
A flat battery is a symptom, not a diagnosis. Before you buy a new battery, a starter or an alternator, test. A battery tester saves money because it tells you which part has really failed.
A good tester answers three questions. Is the battery healthy and charged? Does the voltage hold up while the engine cranks, or does it collapse? With the engine running, is the alternator putting charge back in? The BST100 battery tester covers battery, cranking and charging checks for 12V systems, which makes it useful for home mechanics and small workshops alike.
If the battery tests good but cranking is weak, look at the starter and the cables. Our starters section lists replacement units by part number. If the battery tests good but does not charge with the engine running, the alternator or belt is the likely cause, and our alternators section is the place to look. If the battery itself tests weak after a full charge, it has probably reached the end of its life.
Battery Terminals and Clean Connections
Many no-start problems are not the battery at all. A loose or corroded terminal clamp adds resistance, and resistance stops the heavy starting current from getting through. The car may click, the dash may flicker, and the engine will not turn.
Check the terminals whenever you work on the battery. Look for white or green crusting, cracked clamps, stretched bolts and cables that move on the post. Clean light corrosion with a wire brush, refit the clamp firmly, and replace any clamp that is cracked or will not tighten. When you buy a replacement clamp, check whether it fits the positive or negative post, because the posts are different sizes on many batteries. The YD264 copper terminal clamp is offered in two options in the variant selector, so pick the one that matches the post you are replacing.
How to Use Car Jump Starters Safely
A car battery stores a lot of energy and can give off hydrogen gas while charging. Treat it with respect. These steps follow standard practice for using a lithium jump starter, but always read the instructions that come with your pack first, and check your vehicle handbook for any special jump points.
- Turn off the ignition, lights and all accessories.
- Check the jump starter is charged and switched off.
- Connect the red clamp to the positive (+) terminal of the battery.
- Connect the black clamp to the negative (−) terminal or to a bare metal earth point on the engine or body, as your handbook advises.
- Switch the jump starter on and wait for its ready light.
- Start the engine. Crank for a few seconds at a time and rest between attempts.
- Once the engine runs, switch the pack off and remove the black clamp first, then the red clamp.
- Recharge the jump starter so it is ready next time.
Some general rules apply to every battery tool. Never let the clamps touch each other. Do not try to jump or charge a battery that is cracked, leaking or frozen. Charge batteries in a ventilated space away from sparks and flames. Wear eye protection when you work near a battery. Keep lithium packs out of direct sun on a hot dashboard and store them in a cool, dry place.
Care and Storage Tips
Car jump starters are only useful if they have charge when you need them. Lithium packs slowly lose charge in storage, so top them up every few months and after every use.
Keep clamps and cables tidy in the case so the insulation does not crack. Wipe dirt and battery residue off the clamps after use. For chargers, keep the leads clear of hot engine parts and moving belts, and unplug from the mains before you disconnect the clamps. For terminals, a quick visual check at every service catches corrosion before it leaves you stranded.
Which Jump Starter or Battery Tool Suits You
- Everyday drivers: one jump starter sized for your engine, kept in the boot or glovebox and charged regularly.
- Owners of big petrol or diesel vehicles: a high-output pack listed for your engine size, such as the 1000A or 4000A models.
- People with seasonal vehicles: a smart maintainer for the motorcycle, boat, mower or classic car that sits all winter.
- Home mechanics: a battery tester, a charger and spare terminal clamps, so you can diagnose and fix starting problems in your own garage.
- Workshops and fleets: a multi-bank charger and a tester for quick checks before a customer leaves.
Many buyers pair these items with related parts. Starting faults can also come from the ignition coils or spark plug section, and charging faults sometimes trace back to damaged cables in our wiring harnesses range or a failing sensor in our engine sensors range. For workshop gear, see tools and equipment and diagnostic equipment.
Why Buy From Easy Life Markets
We list every item with the specifications the supplier gives us, the photos of the actual product and clear notes about what is and is not included. The current price and availability are shown on each product page. If you are unsure which of our car jump starters or chargers suits your vehicle, send us your vehicle details through our contact page and we will help you compare the options. Shipping details are on our shipping policy page, returns are covered on our return and refund policy page, and general store questions are answered in our FAQ.
Frequently Asked Questions
What battery equipment should every driver own?
A charged jump starter that matches your engine size is the most useful single item. Add a battery tester if you like to diagnose problems yourself, and a maintainer if your car is often parked for long periods.
How many amps do car jump starters need?
Go by the engine size and fuel type the pack is listed for, not only the peak amps. Small petrol engines are fine with a few hundred amps. Large petrol engines and diesels need a pack rated for that engine size, often 1000A peak or more.
Can a jump starter charge my phone?
Most of the jump starters in our range have USB outputs and can charge phones and other small devices. The product page lists the ports and outputs for each model.
Can I leave a smart charger connected all the time?
A smart charger with a maintenance mode is designed to stay connected for long periods. Check the instructions for your model, use the correct battery type setting, and keep it in a dry, ventilated place.
Why does my car click but not start when the battery is new?
Check the terminal clamps and cables first. A loose or corroded clamp stops current from reaching the starter. If the connections are good, test the cranking voltage. A weak starter can also cause clicking.
Do I need a tester if I already have a jump starter?
A jump starter solves today's problem. A tester tells you why it happened. If the battery keeps going flat, a test shows whether you need a battery, an alternator or a starter, so you buy the right part.
How often should I recharge a jump starter in storage?
Check the level every couple of months and top it up when it drops. Always recharge it straight after you use it to start a vehicle.
Do you ship car jump starters with lithium batteries?
Shipping options and any restrictions are explained on our shipping policy page. If you have a specific question about an order, please use our contact page.