Choose one: T103 looks like a nice light however, the heatsinking fins are very shallow and I question weather they are in the right place. Does this light use a pill that screws in or a shelf that’s part of the head? Thanks
You can’t guarantee that will be — and continue to be — the case.
Series charging eventually becomes unsafe for the customer.
Probably after your warranty expires.
Take 2 identical cells.
They drain down exactly the same way to the same voltage.
They start at the same low voltage when charging.
They recharge to exactly the same voltage.
No problem.
That never happens. Cells age — and heat cycling ages cells faster.
The cell closer to the heat source will be hotter each time.
And people aren’t removing the batteries, so they’re not getting put back in randomly.
The cells slowly diverge.
If they drain down to exactly the same voltage (if there’s a voltage shutoff in the driver)
Then, as they differ, they will recharge to slightly different voltages.
If they’re protected cells and you’re relying on cell protection to stop the drain
the protection circuits will not be (or remain) identical.
Result — no problem for a while, and eventually you’ll have two rather different cells being recharged in series.
I disagree and agree depending on how strobe is accessed. I don’t like cycling thru a bunch of modes to get there and I don’t like activating it when I don’t need it. A set up like the XTAR WK’s or BK or the Fenix PD’s and UC’s where you have to hit the button a certain way or hit another button is ideal. When I need strobe I need it immediately. I’ve used it a number of times this year to wake up dummies before they added themselves and their cars to accidents. If I had strobe available 15 yrs ago at a similar scene there would be one less guy in a wheelchair today.
PS I voted 103 but it’s a toss up between 102 and 103 for me.
103 looks the best to me… 101 I think the batteries should be side by side not end to end, that long tube with the giant head looks disproportionate. I have never used the strobe option on any of my lights. I find it useless to me, I’d rather see hi-med-low. Personal preference, I can see where strobe can be useful to some individuals as jf_smm just pointed out.
103 is nice looking not a fan of the big heads on the others, it could be because im a newbie and im still piecing together hosts with the smaller cells lol. Also the type c usb port is awesome, i made sure the motherboard on my new pc build came with it built in. For those that dont know it is backwards compatible with older usb data and voltage design although you need phsical adapter. C is twice as fast as 3.0 and the physical plug can be inserted either way as long as its lined up. This in itself is a big plus ive repaired quite a few usb ports because people forced the adapter in the wrong way. Thanks for asking our opinion.
Even the balance charger requires balancer cables to monitor the battery voltage of each cell inside, and this is why all the LiPo packs have JST-XH (or similar) balance charge plug.
T101 & T102 has many sharp edges. Maybe good for thumping but would not be nice to skin or pocket. Usb type C is okay…this year and coming year more devices especially gadget will use it everywhere.
I like the looks of the T102. The wider battery tube balances the size of the head and keeps the shape similar to the classic C8, only bigger. There are a lot of single 18650 flashlights and I think you would have a better chance of capturing market share in the less-crowded single 26650 market.