Very helpful review thanks!
Is there an “advised amps” list for cells? Is it a percentage of the peak discharge or just a fixed number for a certain cell size?
I even saw a charger that does 4A.
So before I start cooking my cells I would like some advise on 18650, 20700, 21700, 26650, 32650
Not on the list, do you think 32650 fits?
Recommend charge rates are from .5C to 1C. They say for longer cell life, .8C or below is recommended.
1C mean 1 times the capacity (of the cell). The Samsung INR18650-30Q for example, is a 3000mah cell, so 1C = 3amps… while .8C is 2.4amps (or below)
That’s very clear. Thanks!
[quote=ZoomieFan]
Yes, but only two 32650s at a time, and not side-by-side.
two 32650s at a time, and not side-by-side.
working perfect
Every battery model has a data sheet from the manufacturer. Each model will specify a charge rate for rated life (typically 500 cycles at a certain capacity loss) and a maximum safe charge rate (which could reduce capacity quicker). Typically 1A is good for all 18650 and your not in a rush.
There was a list of 18650 cells with recommended charge rates, but I cant find it.
What very helpful post thank you.
I just bought this charger for $15.99 on Amazon? $9 promo with $5 coupon!
I have an Opus arriving too but I couldn't resist this deal after reading this and other great reviews! I actually need to replace an Xtar VC2 that is 50% malfunctioning.
I’m pretty sure you didn’t. Maybe you bought the C4?
Wait, are you saying you used two coupons to save $14? So the Amazon price was $30? I have never seen it that low on Amazon. Only on Aliexpress when they had their big 11/11 sale.
Do you have a link?
The cheapest I see is $38 which is a pretty decent price for Amazon. Usually it’s $45.
I’m pretty sure you didn’t. Maybe you bought the C4? Wait, are you saying you used two coupons to save $14? So the Amazon price was $30? I have never seen it that low on Amazon. Only on Aliexpress when they had their big 11/11 sale. Do you have a link?
[/quote]
Yes! A C4.
Oh, that is a different model.
Did you mean to buy the high powered 12 amp version C4-12?
Or the lowerer powered 3.2 amp version C4?
The older C4 can be pretty cheap, but it’s not the model we are talking about in this thread.
Still, $16 for the C4 is a really good deal.
Yup, I think I got the lower powered version. It was a little deceiving buying it through the IPad app. I usually charge at 0.5A anyway. Here are the details:
Order Summary
| Items: | $29.99 |
| Shipping & handling: | $0.00 |
| Promotion Applied: | -$9.00 |
| Your Coupon Savings: | -$5.00 |
| Total before tax: | $15.99 |
| Estimated tax to be collected: | $0.00 |
| Order total: | $15.99 |
Thanks for the heads-up and the compliment for the price!
I cancelled the C4 order and ordered the C4-12. Here's the deal for it:
Order Summary
| Items: | $44.99 |
| Shipping & handling: | $0.00 |
| Promotion Applied: | -$9.00 |
| Your Coupon Savings: | -$5.00 |
| Total before tax: | $30.99 |
| Estimated tax to be collected: | $0.00 |
| Order total: | $30.99 |
Now, I'll be able to compare the Opus BT-C3100 V2.2 (from Walmart) with this one and perhaps have a better power supply (??) for the Opus from the C4-12.
I can't wait to evaluate all my pack-pull 18xxx batteries and those infamous fake 30Qs from an AliExpress Liitokala store.
Thank you JasonWW!
What’s the promotion?
I didn't really look... A little too late (tired) but I was happy to see it. I'm a Prime member and they're having Prime Day specials but I didn't see any reference to Prime Day/week.
Wow… great price. I suspect this may be the lowest price we have seen of this charger. I paid US$34.xx for mine a few months ago using a discount coupon from a member here, which I was very happy with. It is my go to charger now with its capability to charge all 4 batteries at 3A each!
Nope…I can underbid that price. :sunglasses:
Unfortunately, shipping was not free from Spain to Germany. Actually, the device did not come from Spain but from an Amazon warehouse the day after just some miles away from my home.
I guess these metal 'cradles' at the positive terminal are the temperature interface. Correct?