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I love home improvement, automation, electronics, refurbishing power tools and equipment, and rescuing tech from the landfill!
All feedback (131)
- z***t (977)- Feedback left by buyer.Past yearVerified purchaseReceived item in good condition,Fast Shipping,well packaged,item as described in auction,Would Buy from Again ,Thanks
- d***2 (205)- Feedback left by buyer.Past yearVerified purchaseGood item, as described. Prompt delivery.
- 8***l (293)- Feedback left by buyer.Past yearVerified purchaseWow where do I start. This store just blew my mind. Thank you Colin I still can't believe it. First time I win this big. You are the real deal. I appreciate you. I wish you blessings 🙏 I hope everyone gives your store a chance. Thank you . Package on time everything from start to finish was the best.Reply from: grantdcol- Feedback replied to by seller grantdcol.- Feedback replied to by seller grantdcol.Glad to hear it :)
- o***o (2695)- Feedback left by buyer.More than a year agoVerified purchaseJust as described and fast shipping. THANK YOU!
- alex.hernandez (189)- Feedback left by buyer.More than a year agoVerified purchaseGood buyer, prompt payment, valued customer, highly recommended.
- 1***1 (97)- Feedback left by buyer.More than a year agoVerified purchaseGreat purchase, awesome seller
Reviews (3)
Nov 05, 2019
Excellent user interface, well made. I prefer it over the LiitoKala Lii-500.
3 of 3 found this helpful Great charger. I bought 1 of them, tried it out, then bought 3 more.
I like it better than the LiitoKala Lii-500. It is built slightly better but more important to me is the user interface.
It shows battery monitoring information for all 4 batteries simultaneously - charging current, voltage, cumulative mAh in during charge, cumulative mAh out during discharge, and time elapsed. The cell capacity testing feature is nice - you pop in a cell and it charges it all the way up, then discharges to a safe low voltage, and then back up. It records and displays the mAh discharged at the end of the process. Setup is super easy, you do it once, and you can pop in new cells over and over again without having to hit any buttons at all.
This model discharges Li-Ion 18650 cells to 3.1v. I believe the BT-3100 discharges to something like 2.8v, which is arguably too low for some cells. It charges to 4.20v exactly which is what I wanted. The LiitoKala goes a little higher.
The internal resistance test ('quick test') seems to vary quite a bit. I take it with a grain of salt and use the value only as a relative measure for comparing cells. I don't consider it an absolute value that can be compared to other values obtained on other devices.
One final feature is that it can do 4x batteries up to 1A each, or it can do just 2x batteries at 2A! That's higher than I need but nice to have. On the other end, it goes as low at 200mA for slow charging deeply discharged cells.
Input power is 12v 3A with a 2.1mm x 5.5mm jack which is super common.
All in all I highly recommend this charger.
Jan 26, 2025
Fits perfectly on HP Envy 5540...
Fits perfectly on HP Envy 5540
Jun 30, 2020
Nice compact charger to take with you.
1 of 1 found this helpful Works as advertised, and it's very nice and compact.
One thing that's unusual is how it charges the lithium batteries. Instead of the traditional constant current, constant voltage charge profile, this charger actually pulses on and off. It appears to provide up to 2 amps current, up to 21.5v, then stops, then resumes, over and over. I think it is stopping to check the pack voltage, in order to know when to stop. This could be totally normal, I haven't observed how other Ryobi chargers apply power.