tag:blogger.com,1999:blog-8576180706756831838.post2864936906835280840..comments2024-03-22T00:21:33.857-07:00Comments on Costco Weekender: Cat Rechargeable LED Work LightExecMemberMikehttp://www.blogger.com/profile/03388549180480657996noreply@blogger.comBlogger71125tag:blogger.com,1999:blog-8576180706756831838.post-45346879796304585342023-12-25T13:45:14.980-08:002023-12-25T13:45:14.980-08:00Had the problem with the third LED not lighting up...Had the problem with the third LED not lighting up after a full charge. There is a 2.7K resistor marked R4 on the PCB silk screen. Replacing R4 with a resistor that’s as close as possible to 4.5K got the third LED to light up. Pretty sure R4 and R5 set up a reference voltage that’s used to determine the charge level. At first I just put a 1K in parallel with R4 but that made the red low charge LED turn on and all the green LEDs turn off, so I figured a higher voltage drop across it would do the opposite. The next thing I did was remove R4 entirely and that worked too, probably because it changed the voltage to the open circuit voltage (potential). I figured it was probably a bad idea to leave it open because I don’t know what the 10% low voltage reference is for the design, remember the circuitry is designed to monitor capacity based on voltage and a known capacity of 6,600 mAh.<br /><br /> Then I figured that since this thing was originally supposed to have a 6,600 mAh battery and it actually has a 4,400 mAh then that gives me 66% of the capacity of the original design. So I figured why not increase the resistance at R4 by 66% to about 4.5K. I ended up using a couple of resistor in parallel to get 4.1K because I didn’t have any 4.5K resistors, but it worked. It will probably work for any resistor between 4.1K and 4.5K but I haven’t done much testing to see. I figured if I go too low then the voltage drop will be too low and display less capacity than I have, or go too high and the voltage drop will be too high and display more capacity than I have. <br /><br />Remember the voltage vs capacity graph of an 18650 is not linear and it varies for different capacities. 3.5V May be 70% for a battery with capacity A but 60% for a battery with capacity B.<br /><br />My method here was quick and dirty and simplistic, so take it for what it is. If you want accuracy then you have to plot a curve of voltage level vs capacity of the 4,400 mAh cell and do more testing to find the appropriate voltage divider pair for R4 and R5.<br />Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-8576180706756831838.post-15316632390031785942020-01-17T23:34:06.299-08:002020-01-17T23:34:06.299-08:00Hello @Larry, you should be able to find the Cat R...Hello @Larry, you should be able to find the Cat Rechargeable LED Work Light at any Costco, but availability will vary per Costco location, so please be sure to check with your local Costco warehouse first. That or you can go to an online retailer and find it or something similar like <a href="https://amzn.to/2RrZLOT" rel="nofollow">these work lights</a> from Amazon.ExecMemberMikehttps://www.blogger.com/profile/03388549180480657996noreply@blogger.comtag:blogger.com,1999:blog-8576180706756831838.post-377303064421020402019-12-17T20:49:08.275-08:002019-12-17T20:49:08.275-08:00Are these lights available anywhere?Are these lights available anywhere?Larry Khttps://www.blogger.com/profile/12287531553680535662noreply@blogger.comtag:blogger.com,1999:blog-8576180706756831838.post-83065854975157125112019-02-10T21:17:34.695-08:002019-02-10T21:17:34.695-08:00Hopefully your Cat Rechargeable LED Work Light is ...Hopefully your Cat Rechargeable LED Work Light is still able to charge, @redcloudsky.ExecMemberMikehttps://www.blogger.com/profile/03388549180480657996noreply@blogger.comtag:blogger.com,1999:blog-8576180706756831838.post-59044671270958794132019-02-08T19:21:11.146-08:002019-02-08T19:21:11.146-08:00Yes, I misplaced my Cat light for a few months and...Yes, I misplaced my Cat light for a few months and it was completely run down, on top of that I lost track of the charger. I have access to a RC hobby charger so I'm trying to charge the battery. redcloudskyhttps://www.blogger.com/profile/00245419678827950588noreply@blogger.comtag:blogger.com,1999:blog-8576180706756831838.post-45133821594453586332018-09-08T20:02:15.618-07:002018-09-08T20:02:15.618-07:00Jack: Are you sure your charger is working? See i...Jack: Are you sure your charger is working? See if any power level lights come on when you press the white button. Try switching to a different outlet to see if the charger works then. If you have a voltmeter, try measuring the voltage from the center of the connector to the outside barrel. If you don’t get a reading, the wire in the charger may be broken. Ask about an exchange at Costco. I think these lights are still selling. ginofshttps://www.blogger.com/profile/18158252931671701313noreply@blogger.comtag:blogger.com,1999:blog-8576180706756831838.post-53974258732798329812018-08-23T10:54:58.939-07:002018-08-23T10:54:58.939-07:00My light just quit working. No lights will come on...My light just quit working. No lights will come on and the charging light doesn't come on when I plug in the charging cord. Suggestions?Anonymoushttps://www.blogger.com/profile/16184671869427005313noreply@blogger.comtag:blogger.com,1999:blog-8576180706756831838.post-75237448320607877362018-07-12T19:18:07.153-07:002018-07-12T19:18:07.153-07:00Hello @Unknown, there should be a user's manua...Hello @Unknown, there should be a user's manual that came with the Cat Rechargeable LED Work Light. That or you may find a digital one online on the Caterpillar website.ExecMemberMikehttps://www.blogger.com/profile/03388549180480657996noreply@blogger.comtag:blogger.com,1999:blog-8576180706756831838.post-13035522076740480002018-07-12T07:18:08.883-07:002018-07-12T07:18:08.883-07:00Is there a manual?
Is there a manual?<br />Anonymoushttps://www.blogger.com/profile/11381530049837369595noreply@blogger.comtag:blogger.com,1999:blog-8576180706756831838.post-22778222467260354482017-12-09T10:45:50.690-08:002017-12-09T10:45:50.690-08:00Hi @Anonymous, thank you for your review for the C...Hi @Anonymous, thank you for your review for the Cat Rechargeable LED Work Light. That's a bummer that your light doesn't seem to charge properly. I would think that the warranty would cover your issue. If you bought yours at Costco, you can always return it for a refund and re-buy it again.ExecMemberMikehttps://www.blogger.com/profile/03388549180480657996noreply@blogger.comtag:blogger.com,1999:blog-8576180706756831838.post-42203785933002024652017-12-07T18:38:14.081-08:002017-12-07T18:38:14.081-08:00Bought five recently; four as gifts kept one for p...Bought five recently; four as gifts kept one for personal use and very impressed! I have charged ours according to the manual specifications. But, the unit will not charge. Green light blinks and when light is turned on, it just works briefly and goes dead. Does the one year warranty on this product stand supportive to the customer when the product fails. I really need to replace ours.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-8576180706756831838.post-51803195085185679132017-12-06T00:48:14.639-08:002017-12-06T00:48:14.639-08:00What voltage is the charger suppose to be? Mine sm...What voltage is the charger suppose to be? Mine smoked and smelled bad when I plugged it in, I think I had the wrong power supply, but its not labelled! Will Shttps://www.blogger.com/profile/13803047987255086134noreply@blogger.comtag:blogger.com,1999:blog-8576180706756831838.post-73086171434954149942017-10-22T10:12:00.591-07:002017-10-22T10:12:00.591-07:00Anyone willing to share a manual or charging instr...Anyone willing to share a manual or charging instructions? I rec'd this as a gift and been unable to locate information. Not on Costco's website. 962841 unrecognized on E-Z Red website. Thanks. Anonymoushttps://www.blogger.com/profile/03570058713324974027noreply@blogger.comtag:blogger.com,1999:blog-8576180706756831838.post-53479274296269341782017-10-22T07:47:13.584-07:002017-10-22T07:47:13.584-07:00This is a defective design. Look at the unit's...This is a defective design. Look at the unit's charger when connected to the unit, but not plugged into the wall. The green light on the charger goes on. That means it is draining the battery to run that green light. Clearly a diode is missing in the design of the circuit. If left plugged into the light while being stored unplugged, the unit will go dead.xjjjxhttps://www.blogger.com/profile/04515923887913964145noreply@blogger.comtag:blogger.com,1999:blog-8576180706756831838.post-48421510069557505382017-10-22T07:45:54.356-07:002017-10-22T07:45:54.356-07:00This comment has been removed by the author.xjjjxhttps://www.blogger.com/profile/04515923887913964145noreply@blogger.comtag:blogger.com,1999:blog-8576180706756831838.post-57436756012409815552017-04-10T08:22:15.669-07:002017-04-10T08:22:15.669-07:00Hi @Anonymous, I was under the impression that lea...Hi @Anonymous, I was under the impression that leaving the Cat Rechargeable LED Work Light plugged in wouldn't hurt, but others may disagree. I actually don't know either way. If you really want to be safe, then definitely err on the side of caution and unplug it if you happen to remember to do so.ExecMemberMikehttps://www.blogger.com/profile/03388549180480657996noreply@blogger.comtag:blogger.com,1999:blog-8576180706756831838.post-9833970778070705822017-04-09T15:01:06.492-07:002017-04-09T15:01:06.492-07:00I just bought this light at Costco, I looked for i...I just bought this light at Costco, I looked for info on charging, what I can`t find is if you leave it on the charger even after it is fully charged or should you unplug it. Some batteries get damaged if you leave them on the charger too long. Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-8576180706756831838.post-2968322035515403902017-03-19T10:25:04.247-07:002017-03-19T10:25:04.247-07:00Thank you @Anonymous for providing some good infor...Thank you @Anonymous for providing some good information regarding the battery of the Cat Rechargeable LED Work Light. It's quite informative and I'm sure people will definitely find it useful.ExecMemberMikehttps://www.blogger.com/profile/03388549180480657996noreply@blogger.comtag:blogger.com,1999:blog-8576180706756831838.post-29051222909829110652017-03-18T17:18:01.020-07:002017-03-18T17:18:01.020-07:00I have been trying to identify the charger. It got...I have been trying to identify the charger. It got mixed in with a pile of chargers. I think I found it. It has a big white label on the cord and is 4.2V<br /><br />About Lithium Ion batteries. They are not like the batteries you are familiar with (unless you see pictures oh the web of Li powered devices exploding.I have not taken mine apart to see if there is any internal charging or protection. At 4.2 V from the charger, that is the maximum voltage that they can be charged TO. This implies there is not internal charging control circuit. DO NOT USE ANY CHARGER THAT PROVIDES MORE THAN 4.2 VOLTS. It will reduce the life of the battery and may cause bad things to happen. EVEN 0.1 OR 0.2 VOLT HIGHER.<br /><br />DO NOT LEAVE IT (OR REALLY ANY Li CELL) CHARGING WHEN YOU ARE NOT THERE. HOUSES HAVE BURNED DOWN. These issues are not common, but they happen. Charging incorrectly is a major reason for failure.<br /><br />Re: leds for charge state. They should not be wrong because of lower capacity battery cells. They are reading open circuit voltage. That is the same regardless of capacity.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-8576180706756831838.post-19010083043849553902017-02-27T08:34:18.637-08:002017-02-27T08:34:18.637-08:00Hello @cabucholz, thank you for providing some val...Hello @cabucholz, thank you for providing some valuable feedback with your Rechargeable LED Work Lights. That's great that you're finding it very useful in your job. Anything that makes your job easier is always a good thing.ExecMemberMikehttps://www.blogger.com/profile/03388549180480657996noreply@blogger.comtag:blogger.com,1999:blog-8576180706756831838.post-56555443611393647722017-02-26T04:41:21.065-08:002017-02-26T04:41:21.065-08:00Just bought 2-Cat 962841and it seems like a good p...Just bought 2-Cat 962841and it seems like a good product, did notice that it did drop from 3 LEDS to 2 after testing after first charge which does no bother me, me being a plumber I needed a good cordless light for under sinks, under houses, in attics and in wet locations so I am happy with this purchase, last year I bought the Snap-On LED light with a cord which is still available there and it is great, even dropped it about 7' onto concrete and no damage. Difference between 1100 and 550 lumens is not much and certainly not 50% so I'm sure charge will drop rather quickly, luckily my work trucks are equipped with a power inverter so I can recharge between jobs if need. cabucholznoreply@blogger.comtag:blogger.com,1999:blog-8576180706756831838.post-85565829923601439912017-02-12T10:47:47.538-08:002017-02-12T10:47:47.538-08:00Hi @Anonymous, thanks for providing your two cents...Hi @Anonymous, thanks for providing your two cents in regards to the your Cat Rechargeable LED Work Light. I'm glad to hear that for the most part, you're quite satisfied with it and that it's working out well for you.ExecMemberMikehttps://www.blogger.com/profile/03388549180480657996noreply@blogger.comtag:blogger.com,1999:blog-8576180706756831838.post-7917715726903226642017-02-11T06:44:14.161-08:002017-02-11T06:44:14.161-08:00Hi Group,
Thanks for all the comments on the high...Hi Group,<br /><br />Thanks for all the comments on the high low settings. I though mine only worked on one setting since I thought it was supposed to toggle low/high/off.<br /><br />Mine is dated 05/2016 and it toggles low/off/high/off<br />It also does toggle between low and high like unknown had said.<br />When the light is on at the low setting slightly press the on button again without clicking it will toggle between low and high with each slight press.<br />Really cool<br />I know Costco must have used the lower battery to save money. Mine also drops from 3 to 2 green bars after turning on, even after letting it charge overnight. This is the only flaw I have noticed.<br /><br />It is really bright, still lasts very long, fantastically portable and much, much better than the old halogen standing lights, or forehead light, or trying to use a flashlight while working. For $30 your should run not walk to Costco to get this if you do any home or car repairs/work.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-8576180706756831838.post-50638722417905637892017-01-28T14:22:55.803-08:002017-01-28T14:22:55.803-08:00Hello @larry, I would think that leaving the Cat R...Hello @larry, I would think that leaving the Cat Rechargeable LED Work Light charging while you step away is ok. It'll almost be like leaving your iPad or smartphone charging right? I may be wrong, so definitely consult the owner's manual just in case.ExecMemberMikehttps://www.blogger.com/profile/03388549180480657996noreply@blogger.comtag:blogger.com,1999:blog-8576180706756831838.post-24779543540671768492017-01-27T15:48:21.502-08:002017-01-27T15:48:21.502-08:00Can we leave the light charging and go away for th...Can we leave the light charging and go away for the day without worrying about a fire?<br />We bought two and just got two more <br />Now we have all the chargers we will even need in case we misplace another <br />We light up pop up canopies at expos where the is no AClarryhttps://www.blogger.com/profile/07015749022170837307noreply@blogger.com