【Updated】New Product - XTAR 21700 6000mAh 10A Battery
So glad to share XTAR 21700 6000mAh 10A battery was released online!
More details online: XTAR 21700 6000mAh 10A Battery - XTAR
Any plans to make the cell available in a flat top without the protection circuit? The button and protection board may make it a bit long for some applications…and chargers (74.8±0.5mm).
【Updated】 About charging current for different Li-ion batteries
Some customers asked about the impact of charging rate on their Li-ion batteries life. When charging a Li-ion battery, the smart charger has a maximum charging current. But the actual charging current is determined by some factors, such as the battery’s size, capacity, internal resistance, and age. Welcome to view more info online:
Cheap chargers use basic charging methods without precise control, often causing batteries to overcharge and overheat. In contrast, high-quality smart chargers can select the optimal charging currents based on battery’s conditions.
For small size Li-ion batteries with low capacity, such as 14500 and 16340. They have a max capacity about 1200mAh, a charging current of 0.5A is recommended. XTAR Mini Chargers such as MC1 PLUS and MC2 PLUS, are ideal for them. These chargers can auto-adjust the charging current to 0.5A or up to 1A based on the battery size.
As for high capacity, big size Li-ion batteries, such as a 18650, the capacity range from 2200mAh to 3600mAh with a maximum of 4000mAh. And for 21700 and 26650, it can reach up to 6000mAh. A higher charging rate of 1C is acceptable for them. Choosing a more intelligent and multifunctional charger is advisable. A good option are the XTAR Visible Smart Chargers. They allow you to manually select the max charging current with 2A or 3A.
+1 to that, and besides size, there are flashlights (aka ‘pocket rockets’) that will trip the protection circuit if one tries them with a protected battery.
Thanks for pointing to that article, very informative. But I think this part is wrong and/or confusing:
Besides, when the charging current is below 1C, it mainly speeds up the loss of active electrode materials. Using a cutoff voltage lower than 4.2V primarily results in lithium inventory loss.
I’m not a battery scientist, but I’m pretty certain that charging a Li-Ion battery with less than 1C current does not, per se, cause any “loss of active electrode materials”. In the same vein, using a lower cut-off voltage should not result in any “lithium inventory loss” as long as other charging parameters (specially charging current) are within acceptable range.
Can you please elaborate?
TIA.
Hey there @dmenezes, I just fixed the quote formatting for you here in this part:
【Updated】 Capacity tests - XTAR 18650 4000mAh and 26650 6000mAh batteries
There are some tests on XTAR 18650 4000mAh and 26650 6000mAh batteries by different people. Feel free to check more details via their videos below.
【Updated】 40% OFF for XTAR H3 Headlamp+18650 3500mAh battery on ERIKOISTUKKU.FI Store now!
40% OFF for XTAR H3 Headlamp + 18650 3500mAh battery on ERIKOISTUKKU.FI Store for Finnish customers now!
This H3 1000 lumen headlamp has five brightness levels, beam distance 157m. It’s a good companion for your outdoor activities, such as hiking, camping, backpacking…
Product links:
H3+18650 3500mAh battery: PAKETTITARJOUS: 1000lm Xtar H3 LED-otsalamppu +3500mAh Tehoakku +USBlaturi | ERIKOISTUKKU.FI
【Updated】Different batteries’ comparison sheet from Diodek
Glad to share Diodek’s sheet in which he shares different battery tests with links below. You will find tests of over 200 battery models, including weight measurement, capacity measurement for 3 different loads and more. Welcome to check detailed comparison of different AA, AAA, 9V, 21700 batteries…
【Updated】 XTAR CVSA Tech to charge NiMH batteries better
You may know many NiMH battery chargers use the “Negative Delta V” (negative voltage change) method to detect whether the battery is fully charged. While the voltage change for is only about 3-5mV. This small change makes it difficult for chargers to detect accurately. If the charger isn’t accurate enough, it may stop charging early or overcharge the battery, affecting the battery’s performance and lifespan.
To charge NIMH batteries better, we developed the CVSA tech and integrated it to our smart chargers, such as L4, L8, VX4. The key advantage of CVSA is that it controls the battery temperature during charging to avoid overheating, while also ensuring faster charging and higher accuracy of full-charge detection. This helps prolong the lifespan of NiMH batteries.
Additionally, chargers with CVSA tech don’t rely on a single method for full-charge detection, but use multiple methods, including over-voltage protection, timeout protection, and -delta V detection, ensuring a safer and more efficient charging process.
Please check more info on our website:
【New Product】XTAR 21700HP 5000mAh 25A Battery
So glad to share XTAR 21700HP 5000mAh 25A battery was released online! This 21700HP battery offers 5000mAh capacity and 25A continuous discharge current, making it perfect for flashlights, power tools, and other high-demand devices.
Key Features:
· 25A Max Continuous Discharge Current for High-Drain Devices.
· 5000mAh High Capacity Maximizes Runtime.
· 500 Cycles for Cost Savings and Eco-Friendliness.
· Built-In Explosion-Proof Valve Enhances Safety.
· Integrated Gold-Plated Protection Circuit.
· Worry-Free to Charge with XTAR Chargers.
Check details online:
I bought your VC4SL charger and really wanted to love it. But left battery holder was stuck at about middle of it’s travel and spring wasn’t pushing it any further, only by force it could be retracted to the default position. I disassembled it and my understanding the issue is somewhere in plastic mould as that part wasn’t traveling feely all the way. I tried to thicken the channel a little bit with a knife but could only do it so much. Here is the best result I could achieve. It’s still not all the way up. And for some reason I can’t upload a picture.
