Schumacher SJ1332 Review 

Yeah the air compressor is very low CFM, but filling a passenger car tire from flat is fairly reasonable time. I'm using mine to power all the LED lights in my shed. Two Spot lights 120 watts equiv and two 100 watt equivalent takes about 80 watts total. Lasts on the battery pack for about 5 hours. Perfect amount of time when mowing the grass or snow blowing at night!

You are very welcome! Actually it seems that many people who do the van boondocking use these power stations. Its a great small unit and is very utilitarian!

How much was the battery

Do you leave the switch on or off?

not impressed with the inverter can't get it to run a coffee grinder

When it's fully dead and I try Charging The Unit should it be flashing red?

Flashing red means that the battery inside has failed and will not accept a charge. Likely the voltage at the terminals is too low for the charger to engage.

You will have to check the wattage ratings of the coffee grinder. Even if the wattage is within 200 watts likely the surge wattage when the grinder first starts up the inverter cannot handle. In addition with it being a modified sine wave the efficiency is far less and you would need more wattage capacity in order to run an inductive motor load like that.

Interesting. Yeah that's what i paid for it too. Good to know! So far really like the unit, only complaint is the jumper cables are a bit short for my liking.

Just got one today from AAP also $124.99, 2 yr Replacement if defective on receipt.

My receipts say 2 yr replacement too, but online it says 1 yr. Little bit confused 🤷‍♂️

Do you know if I can charge car battery from it?

I bought mine from Advanced Auto, same price and this was just a couple of weeks ago.

Anytime! Love this unit! worked very well so far!

Switch is on the back

@@Brittanybluejeansbluejeans Even if the battery is charged the green light should come on momentarily but shut off if it is close to full charge. You may have a problem with the battery and or the charging circuit internally

Yes

Yea i agree it is a weakpoint.

Interesting

@@Bassguitarist1985 also got the 1.5 tender for 5.

@@ChadCesaro maybe they are coming out with a new model. The other issue is the internal battery wont stay fresh forever, maybe thats why.

Omg. I bought one for $130 for this damn hurricane. Taking it back after

Wow what a steal! I got mine today at advanced auto parts for $135 tax included 😓

Its a 20Ah battery. So about an hour or less

Simple two prong cord

Glad to have helped! I do the same thing with my shed. Wired it up with a generator unlet box, small sub panel, and it powers a few lights and outlets so I have light when its dark out early. Can always run the generator if I'm working out there for proper power too.

Based on the highest setting of 400 watts. A 20Ah battery will last a half hour. At 200 watts continuous about an hour. Id say no its not big enough. Now a big 29DC boat battery with about 220Ah, that would do it with an inverter running off that

Far as I can tell there is very little support from Schumacher. I haven't dealt with them directly for any parts if there's even any available.

I got an email response from them, they said there’s no replacement for that part but you can charge the device using a male to male DC cable on one of the DC ports. When I asked them how to get that to an AC wall outlet they said I’d have to buy a second cable to convert DC over to AC. (They also said DC charging in your car should be limited to 30 minutes while the car is running.) I’m waiting to hear if they have a different solution that’s one single cable, DC on one end and AC on the other, that I can use to charge through the DC port. If you have any advice on that type of a cable, let me know!

Im sure it can be repaired if you are handy. If not then it may be better to buy a new unit

Have you changed the internal battery? How old is it?

It does not have a belt, it is gear driven.

The internal battery has sulfated due to age. It needs to be replaced. Battery is about $40 or so off Amazon. The battery can be replaced and access from the bottom with a couple screws. If you do that you should be fine. The unit is able to power up just for a few minutes because you are using the power of the charger to turn on all of the accessories. Don't do that for too long as you can damage the charger.

If green light doesn't light either the internal charger has failed, and/or the battery can no longer accept a charge

Ill keep that in mind for a future video topic!

Appreciate that!

Yea 2000 amps PEAK power at the jumper clips. Running a laptop maybe if the PSU can handle the modified sine wave. NO WAY this could power a water heater. Not even in the same league.

@@Bassguitarist1985 Hi just wanted to know how long does it last using a circulating fan at my home if we get a current outage

@@scotrambaran6638 how many watts is the fan?

1 year warranty

Internal battery has sulfated due to age/use. Time to replace it.

Its a 20Ah battery so quite a lot for that sort of stuff. I would get the car adapter so you can charge it there when the power is out.

Hope you enjoy it!

Yes you can

@@Bassguitarist1985 I just bought this 2 days ago. I have a camper and I have 3 deep cycle batteries in parallel and I have 2 100 watt solar panels connected across the batteries. I can charge this unit from my solar panels that are hooked to an inverter in my camper. I can run a travel fridge that pulls 50 watts and the battery stays at 100%. Pretty cool! I don't know anything about AGM batteries...is there a down side to charging and using at the same time? It appears to work fine!

@@frankroper3274 AGM batteries are charged at a slightly different rate than flooded lead acid batteries but they are very close. In general you should not mix up different types of batteries in a battery Bank. The rig you are describing is good in a pinch but I would not leave that as a long-term solution.

Yes the pump can overheat, especially filling a tire from being completely deflated. Adding a few PSI to a low tire shouldnt pose a problem at all. The overheat should be temporary as the sensor prevent motor damage.

Absolutely not. Thats WAYYYY too much power. 12 amps is shy of 1500 watts and this jump pack only can do 200 watts, and it cant power that load for no more than 1 hour at full charge.

@@Bassguitarist1985 can it power any kind of leaf blower at all that's corded? I'm asking for an outdoor project that requires a power source, whether it be charging a backup battery, or just going with cordless, larger leaf blower battery.

@@CoasterTeaFox it cannot run any corded leaf blower. Even charging a battery for a cordless blower is not practical or recommended. A 22Ah battery is limited for the purpose you want. Also the modified sine wave output of the inverter may not work with your charger, could actually damage it. Bottom line not the right tool for your job. If you truly want to power a 12A corded blower from a portable power source, a 2k sine inverter with two group 29DC boat batteries will get the job done.

@@Bassguitarist1985 Okay thank you for the insight🙂

Is it not charging at all? Good chance the battery inside is worn and needs replacing Or are you saying that the charging unit that charges the internal battery has failed?

@@Bassguitarist1985 Hi how can talk to you I have o e but I don’t know if can fix it or but other

There are two fuses on the inverter board. Younneed tonremove the battery on the bottom and split the two case halfs to access them. You can remove with your fingers and replace them. They are automotive blade type fuses.

How old is the unit? Long beep or short beeps?

Are you referring to the accessory that has two male accessory 12v plugs?

According to the manual using this feature will overcharge the unit. I think they recommend 1/2 hour no more.

That is normal. It is a reminder beep the main switch is on. The Dc to Dc converter for the usb is a parasitic draw on the battery when not in use thus why it beeps. Not the best design IMO. Better off getting one of those cheap cigarette lighter to usb adapters

Just use an extension cord to plug in to the two prongs on the back. You can press the grey button to see the state of charge

Charge it first, then you should be good. Keep in mind that the waveform is not a sine wave, but a stepped square wave. Your VAC fan will buzz, spin slower, and run hotter. The rest of what you descibe should be okay, but not every SMPS is compatable.

Thanks for taking the time!

@@richardsoraiz4225 anytime!

It shows percent charge. Is the green charge light on?

Turning on the switch does nothing? Its a 3 position switch. Middle is off, the two outer positions are for the inflator/deflator and the compressor

Sure i dont see why not. Long as there is a charge controller to regulate the current going in between the panel and the unit.

Hard to say. The gears are plastic and they may have broke. The pump could have worn out and not pump air.

A phenomenon called Peukert's Law. The display may say 55-65% but the display is reading open circuit voltage, its an approximation of remaining capacity. 6-7 hours is very good for a fan given the size battery. It is not a deep cycle battery with thick large plates inside. Its an SLA battery, thinner plates designed for quick high current draw to jumpstart cars. While it has capacity for low power applications with the inverter, you are asking a lot of it for a 20aH battery. Still, impressed at the capacity you got given its size. Its a decent unit!

@@Bassguitarist1985 love the unit and not upset with it at all. Just wanted to get a better understanding of it and why it keeps doing it. And I know the batteries isn't bad because it does it with both. But very pleased with it. And definitely want to see how this works over the winter with some of the stuff I want to use the inverter for. Such as tiny little space heaters($10-15) ones. And see how heating blanket works off either the 12v or a house heating blanket. Thanks again. Gonna check out your page and that. You seem very knowledgeable on this. I appreciate the quick response.

You could, but a 20Ah battery in the Schumacher to charge a much bigger battery. You would only get a partial charge

Fan on/off is normal under load for the inverter. If its 100% then you should be good. Probably just needed to be topped off

I dont know what the code means. I know R02 means everything is good. There are two fuses soldered, 30As that could have popped.

You are very welcome!

If you have not charged it up in a year chances are the battery has set at less than 100% depth of charge and has likely sulfated to the point where there is little usable capacity left. Normally from a 50% discharge it would take about 5 hours to recharge. But my guess is that the battery will have a good voltage but not be able to push any current to run the accessories or boost a car battery

There may be a fuse that popped, or a component in the charge controller board that has failed. Will have to open it up and inspect

@@Bassguitarist1985 where should I look for the fuse?

@@PrayWithPurpose2023 check inside. There is a control board for the charger. There may be a fuse on or near that board. There is a 20A fuse for the 12vdc sockets, that is not part of the charger.

I'd say so if the bulb is an LED.

Anything could have smoked and failed. Hard to say.

It's pretty straightforward you connect positive to positive and negative to negative and then the large rotary switch you turn to the right set to the on position. This will turn on the internal battery to boost your weak car battery. That's pretty much it.

@@Bassguitarist1985 maybe it needs to be charged all the way or it just doesn't work anymore. Thanks for the immediate response for such an old video man!

@@davontihoward9038 My pleasure yeah if it has not been used for a few years it may not even take a charge and the internal battery will need to be replaced. The battery is only last about 2 to 3 years with normal charge cycles I've found but the replacement off Amazon is about $40 USD. Takes about 15 minutes to replace and you should be good to go

@@Bassguitarist1985 makes a lot of sense. Had this thing for probably a life time. Thanks man

Its a modified sine wave, so energy transfer is not as efficient as a sine wave like you get from the utility.

when does it beep? I know it beeps every few minutes when the jumper switch is on to remind you to turn it off when you are done. It draws on the battery if left on

@@Bassguitarist1985 thanks for your attention. Blessings

Should be 80% or higher in general.

Yes correct!

Bassguitarist1985 thank you!

How old is the unit? If used more than 3 years id saybyeah battery is sulfated and needs replacing

Plug it into one of the 12v power ports. It will keep your battery charged with the engine running

Do you have to turn any switch on to charge with the male ro male accessory cable?

Unplug the unit and press the button again. If it does not refresh, take a DMM and see what the voltage is at the jumper cables with the turn knob switch on. Anything below 11VDC means the battery is sulfated and needs to be replaced.

It does need to be disassembled to get to the 20A fuse. Not hard just tedious. Standard blade fuse.

@@Bassguitarist1985 Thanks - I'll get busy!

Use the 12 volt adapter. The stepped square wave of the inverter may not be compatible with your AC adapter.

I am not sure of the error codes, you would need to contact their CS for more info. I'm curious myself and will ask too. services@schumacherelectric.com www.batterychargers.com or call 1-800-621-5485 Monday-Friday 7:00am to 5:00pm CST

Thank you when I tried to look something up on RU-vid and don't get an answer I forget I can always call the company..😏...it's true ..lol

There is an SLA battery inside. If the jump pack is improperly used such as short circuit that battery can explode going into thermal runaway. DON'T CONNECT THIS TO A HOUSE BY ANY MEANS! Other than that the jump pack is very reliable!

How many watts is the macbook charger?

This is NOT a battery charger and should not be used as such. If your mower battery is dead/low you can use this jumper pack to crank the engine to start it, and then let the onboard mowers charging system recharge it's battery.

Thanks so much! Didn't expect such a quick response. @@Bassguitarist1985

Grab yourself a killawatt meter and see how many watts everything draws on utility first. If its all under 200 watts then it will run, though i doubt it will last long. Plus the modified sine wave is not good for audio equipment, it induces a nasty hum/buzz. Whats your application?

No that will simply ruin the battery inside the jump pack. It is only meant for boosting a low battery not a dead battery. You may be causing further damage to your car especially your alternator if you don't replace the battery.

@@Bassguitarist1985 Turns out the battery is perfectly healthy. Something is draining it…

@@alexisgonzales2958 gotcha. Yeah this jumper pack may not have enough cranking amps by itself. Ot boosts a low battery, a completely dead battery may need a running vehicle to siphon some power back into it

I haven't seen any issues with laptop power bricks. They may not be able to output full power due to the modified square wave but they should at least keep the computer running

what is the wattage of the charger?

Hello thank you for watching! I need more information to answer your question accurately. For example what is the power draw for your router and your modem? For example 800 milliamp draw which is fairly typical of a router with a 22Ah battery can run up to 27 hours, assuming it is not running anything else. Hopefully that gives you an idea.

Yes just need a charge controller with a 12V output. I'd make an accessory 12v male adapter to charge as its protected by a 20A fuse.

Need more info. Do you have the panel along with a charge controller? Is the controller designed for 12 volts? If so then yes. In the scenario I just stated you would need to make a wire that goes from the charge controller to a male type cigarette accessory adapter. That would charge the internal battery with the solar panel. I would not expect a small solar panel with charge controller to connect at the AC power inlet for charging. For that you would need an external inverter to power that charge circuit

I'm not sure of the exact differences I did not dive that deep into it other than I know that the air compressor is different. If you find a 12 volt accessory male to 12 volt accessory male adapter that will allow you to charge it while the car is running

@@Bassguitarist1985 Thank You.

Check the twist switch forst. I didnt see a fuse for the jumper cables

@@Bassguitarist1985 Right, I took it apart and there is not a fuse. I noticed the rotary switch was melted and not working - some arcing must have overheated the plastic. Any idea where I can find replacement switch? Having trouble locating one. Thx.

@@timothyroos6124 you can try calling schumacher, I don't have experience with their customer support though.

Yes the rotary switch turns power on to the alligator clips

Does it beep with the rotary switch for the jumper clips on? Like every few minutes?

@@Bassguitarist1985 no it’s a steady beep whether the switches on or off

@@narcissoarce okay so not the rotary switch but with the inverter switch on?

@@Bassguitarist1985 all swishes are on the off position

In order to get the sound to start, I have to disconnect the internal battery. I have that unit open.

20A is for the accessory outlets, the turn switch is for the jump cables. It will show voltage of the internal battery when on, and i beleive the voltage of the dead battery when off.

Any idea why the jump pack is not working but air compressor and light still works

@@michaelwalston543 so you get no voltage at the allegator clips? Is the switch on? If so may be an internal issue.

Correct no power at alligator clips and when I turn switch on no voltage reading on display and when I connect it to dead battery I get a reading on the battery I am trying to jump it worked yesterday morning when I used it to start lawn tractor I left the switch on and when I was done no power or display I charged it says 100 and still no power at clips I think switch might he bad thanks for your help

@@michaelwalston543 sounds like the switch. its a double pole single throw DPST type switch. It switches the high current wires from the battery to the clips, and a low current circuit to power the display. Chances are that switch is bad. You can try calling Schumacher if they have a replacement, I haven't tried getting anything from them yet.

That means the inverter output stage is shorting out. Soon as you turn it on it goes from 0 watts to 192 Watts which is right at the limit of continuous power the inverter can handle. It will then go into protect mode and shutdown that's what the continuous beep is for. If you got this new from the store I would return it and get another one. If you got it used then likely the inverter output transistors need to be replaced or any number of components. I have not done an inverter teardown mine is still working fine as I use it to power lights in my shed

Bassguitarist1985 well poop. More info then I had but more depressed than I was now. I got it used. It’s still like new tho.

@@Taurus4x4mt I haven't taken mine a part yet that far but I believe the inverter unit is a small box type device with a heatsink on it. I know that it can be repaired. The kicker is being able to read the component part numbers if they are not all charred and burnt

You could try calling Schumacher and seeing if they sell just that part

A small computer monitor say 20 in wide screen should be just fine. I don't think the modified sine wave will be a problem. The runtime for the monitor probably won't be as long as you need it to. For example my Dell 20 inch widescreen is 1 1/2 amps at 120 volts. That's roughly 175 Watts. That would only run for about an hour on the jumper pack. What you can do is get a group 29 deep cycle battery and connect the power leads to it. That will give you ample power for a monitor that size to run at 4 more than 4 hours for example. Now add in a computer desktop tower. Thats several hundred watts, means you need more big batteries, and a larger inverter preferably a sine wave inverter that is beyond the capabilities of the Schumacher jumper pack in question

doubtful, no one would buy it, and it be cheaper and easier to build one self.

I didn't really go over that figured it was pretty straightforward.

@@Bassguitarist1985 It was. I was looking specifically for that because I wasn’t able to jump my side by side. Turns out I’m an idiot. I simply wasn’t turning the ON switch far enough. Embarrassing but funny. Once I actually turned the unit on it worked just like it should. 🤦‍♂️🤦‍♂️🤦‍♂️

Still going strong! Let me know if you have any questions! Thank you for watching!

I haven't tried myself but apparently a fully charged battery should be able to boost a flat battery on an 8-cylinder engine. If your battery is completely dead then something like this would not be enough on its own to crank on a V8 engine

I would say no. Diesel engines need a lot of cranking amps from large deep cycle batteries. I would say the biggest engine this can handle is a V8.

Do you mean plugging in a battery charger to the AC outlet through an extension cord?

@@Bassguitarist1985 Yes I believe battery isn't holding a charge and was wondering if I can still jump vechile with jump box by plugging it in directly to outlet to use for my vechile

@@nauvinflorien8249 not advisable. A trickle charger in the AC outlet, you will deplete the internal battery too quickly to have any positive effect on the dead battery. Time for a new car battery.

Nice

One is for the led light and the bottom one is for the inverter

I let it charge completely it's an automatic charger so when the battery is full the green light will go off. Being that it is a sealed acid battery it will self discharge but at a very slow rate if you don't use it for a while best to put it on the charge for a cycle once a month to keep the battery topped off

Yes! Hard to say how long it would last. Depends on the current draw of the speaker.

No it does not

Thanks for the visit

The internal battery? How old is the unit?

@@Bassguitarist1985 about a year

@@Bassguitarist1985 l only used it twice and stored in my garage went to use it yesterday and would not work so I went to charge it nothing

@@rodneynaples5799 the green light on the back isn't lighting up? When you turn the switch on what does the display do? Good chance the internal battery has failed. Though you only had it a year the product may have been on the shelf for a long time.

You planning to use the units inflator, or use the unit to power the air mattress that has its own inflator built in?

I dont see why not. The motor is likley a DC motor powered by 120VAC

I am using the power to run the motor in the mattress. I tried it and it worked, it took about 2 minutes to inflate! Thanks for answering my question!

Your video answered a few other questions I had. There wasn’t a manual with it. So the video was a big help. Thanks again!