Lucstar USB Timer Charging Controller with Appointment and Working for Protecting Camera Phone Tablet Household Fans Applianc

I've had several devices (phones and tablets) whose batteries could barely hold a charge after two years. Back then I was a "plug it in all night" kind of guy, and my tablet was plugged in probably 20 hours a day.I had heard the theory that this treatment led to battery damage, so decided I'd try keeping the battery charge between 20% - 80%. This meant I'd need a way to stop charging at the 80% mark. I installed the Android app AccuBattery, which you can configure to have an alarm go off at a chosen charge percentage. This works fine if you're sitting at your desk and hear the alarm, but doesn't work in other situations, such as if you need to charge your phone at night!I then tried a USB device that goes between the charger and your phone, and connects to your phone via a Bluetooth app. Software on the phone would send a signal to the device at 80% charge point, telling it to shut down the charging current. This sounded like the perfect solution, but there were hassles with making sure the correct device was connected via Bluetooth (I would have both my phone and charger bedside, for example) and for some reason, over time, this device would no longer provide any more than the tiniest trickle of charge, meaning my phone would never get charged. Or ... the bluetooth app would stop running, meaning I'd wake up to a phone at 100% charge.So finally I tried this timer charger, and finally I have something that works! With a bit of testing I know approximately how fast each of my devices charges (what percentage they charge in an hour), so I can pretty accurately estimate how long I'll need to charge something in order to get to 80%.For example, my phone charges about 66% in an hour, so if it's down to 20% I'll set the time for 50 minutes and after that time it will be close to 80%.Another plus is that this can be used on any kind of device, even Kindle e-readers.I have never used the "time to turn on" functionality, so cannot comment on it. In fact, I would prefer for it not to have that functionality, so that the top and bottom buttons can be hour up/down, minute up/down, but this is a minor quibble.

Cool device but it doesn’t seem that intuitive to setup for a timer.My intended use for this is with my WiFi hotspot. The hotspot will shut off the charging port after a couple hours of it being fully charged which is a nice safety feature to preserve the battery on the device but it’s also annoying too as I’ve woken up to lower battery levels on the hot spot, so my solution was a usb timer and I was happy to find this.My goal was every 8 hours to turn it on say 90 mins and give the device some juice to top of the battery, but the runtime would likely be adjusted depending on actual real world tests and usage.My hot spot isn’t used all the time but rather it’s used when I’m in my 5th wheel trailer on my cell phone booster. It allows me to have some level of internet and maybe do some Netflix or even let an outdoor camera stream, so in my specific use of the hotspot I want it on 24x7 when I’m using it.

First: The timer I received is scratched up and definitely used. So Beware, the seller is reselling used as though new.Second: The product claims this USB timer can do up to 3 amps. (That's 3,000 mAH) I have tried plugging this thing into several different chargers and none of them even come close to 3 amps. When plugged into my 2 amp charger, I see a charging current on my phone of around .3 amps (300 mAH) The best I can get is around .5 amps when plugged into my 2.4 amp charger. I've even tried a 3 amp charger and it performs worse for some reason.Third thing: The charging current is wildly inconsistent. It's all over the place. I've attached two screenshots of my android app called AccuBattery which measures amperage, voltage and battery life. You can see in the screenshots one is giving about .1 amps and the other is just about .5 amps. This is while plugged into my 2.4 amp charger. Pretty pathetic performance given that the product promises 3 amps.That being said, my unit currently works. Just nowhere near what is promised.

I wanted to use this timer with a powerbank (Pxwaxpy Portable Charger 36800mAh) so I could control when a Haida lens antifog belt shut down.Does it work? Yes it does. However, the powerbank I used, like most powerbanks, will not stay on unless enough current is being drawn, so you can't use the delay feature with this timer if connected to most powerbanks. The instructions refer to this delay feature as the appointment hour and minute buttons. But I didn't need a delay, I needed to set a run time which the instructions refer to as the countdown hour and minute buttons. The powerbank gives you just over 30 seconds to set everything up and start asking for current. Not a problem once you know which buttons to use. So, I connected the Haida antifog belt to this timer and then plugged the timer's USB-A connector into the powerbank, set the countdown timer, and then turned on the antifogger...and I was in business! Actually, I ran 2 of these timers and 2 Antifog belts off of one powerbank. Set them both to run for 5 hours and everything worked.I will also note that I didn't need to set up any repeating intervals...which this timer can't do. I also expect that if one is running this timer off a power adapter connect to a wall outlet, the delay feature should work fine.

This'll unfortunatley have to go back - there was no good description on this site, so I hope this review helps.This is a ONE instance timer - you can set it to count down from "ON" to turn off after HH:MM or you can start from "OFF" and after HH:MM it will turn "ON"It will only do this once - so this can't be used for unattended charge cycling of a device (my intended use, similar to any typical mechancial or smart wall timer)3 Stars - does a job, but doesn't describe it well