mrheosuper
(mrheosuper)
August 17, 2018, 3:34pm
253
HKJ
(HKJ)
August 17, 2018, 3:45pm
254
mrheosuper:
This is a power supply, not a charger, but if you can, i want to know about how safe and good it is
this PS would be very convenient for small project
A $1 power supply, I have ordered on.
HKJ
(HKJ)
August 25, 2018, 6:44am
255
I do generally not like AA based power banks. 4xAA is about the same energy as one 18650 cell.
angerdan
(angerdan)
August 25, 2018, 7:36am
256
ChibiM
(ChibiM)
August 25, 2018, 9:53am
257
HKJ will do you a roundup of chargers for 2018? Or do you think this page is good enough: https://lygte-info.dk/info/roundCellChargerIndex%20UK.html ?
thanks for all the hard work!!
HKJ
(HKJ)
August 25, 2018, 10:42am
258
I have never done a roundup of chargers, in late December I do a status where I list some noteworthy products from my testing during the year.
ChibiM
(ChibiM)
August 25, 2018, 11:35am
259
That's what I probably meant.. I thought you sometimes showed a list of recommended chargers...
angerdan
(angerdan)
August 26, 2018, 7:19am
260
chokobo
(chokobo)
September 14, 2018, 5:23pm
261
HKJ
(HKJ)
September 14, 2018, 5:26pm
262
I do not have anything to say about it yet, but Xtar has promised me a review copy.
HKJ
(HKJ)
November 3, 2018, 7:42pm
264
I definitely want to review that charger, but it will first be next year, I have a lot of chargers in queue.
d_t_a
(d_t_a)
November 5, 2018, 4:05am
265
angerdan:
Nitecore UMS4
UMS4 is a QC input available intelligent USB four-slot superb charger with a total max output of 4,000 mA and a single slot max output of 3,000 mA.
With LCD display for real-time charging information, it is equipped with a USB charging port for outdoor charging
UMS4
That looks a bit similar to the Nitecore SC4 (SC for “Superb Charger”), except it uses USB Quick Charge voltage to power that charger.
If it’s sort of a modification from the SC4 to adapt for USB QC input voltage, hopefully it won’t have the bugs/”features/annoyances” that are present in the SC4 (the SC4 time-sharing of charging certain slots seems to be also present in other Nitecore chargers; but also in some SC4, the capacity charged display can display grossly incorrect charged capacity results, as mentioned by several user reports when the SC4 is charging all 4 slots, maybe related to the “charging time-sharing”?)
NWoodsman
(NWoodsman)
November 6, 2018, 9:33pm
266
HKJ
(HKJ)
November 7, 2018, 8:33am
267
Probably not this year, I have a lot of chargers in queue at the moment.
hank
(hank)
December 5, 2018, 4:10pm
268
How about flashlights with built-in chargers?
Here’s a comment on the charging behavior of the Sofirn SP32A V2.0
that’s currently being offered at a discount (read the first post, email them for a code):
Thank you for the hint with AliExpress.
Concerning the voltage:
I’m not saying the charger is dangerous nor safety would be at risk for the battery. Instead, the battery will be worn down quickly for pushing it to/beyond its specifications. It’s not only the 4.21V but also the extreme long CV phase that is applied to the battery. Usually, voltage drops from 4.20V to 4.14-4.16V when charging is finished as the termination phase is rather short.
where Lux-perpetua said
Concerning the voltage:
I’m not saying the charger is dangerous nor safety would be at risk for the battery. Instead, the battery will be worn down quickly for pushing it to/beyond its specifications. It’s not only the 4.21V but also the extreme long CV phase that is applied to the battery. Usually, voltage drops from 4.20V to 4.14-4.16V when charging is finished as the termination phase is rather short.
HKJ
(HKJ)
December 5, 2018, 4:11pm
269
I like to measure the battery voltage while testing chargers, that is rater difficult on a flashlight without drilling holes!
hank
(hank)
December 24, 2018, 10:11pm
270
Can a charger that’s capable of providing say 1 amp to a slot somehow detect a smaller cell and reduce the charging current?
HKJ
(HKJ)
December 24, 2018, 10:43pm
271
That depends on the charger, some can, either by testing the length of the cell or by measuring the internal resistance.
d_t_a
(d_t_a)
December 25, 2018, 1:40am
272
Some Nitecore chargers do that, I know the SC4 and the F1 does that. I think 14500 or 18350 get 0.5A while 18650s get 1A (for the Nitecore F1). The SC4 also has something similar (check HKJ’s reviews for detailed info).