Wish to buy Battery, Charger and Buck converter for 12V , 2A router

[Flyback]

Hi,
I need to do some Teams interviews and will be in my car in a car park at the time as I will be "on the road".
My Samsung SM-J330FN smartphone will not run Microsoft Teams.

As such I have to use my laptop with my B625-261 mobile router. The router needs a 12V, 2A power supply. As such, I will need to buy...
1...A 24V rechargeable battery pref >2Ah
2...Charger for the above battery (can be uk mains powered)
2....A Buck converter for 18-30V to 12V dc , 2A (to power the router)

Unfortunately I am not allowed to make my own Buck and Charger in the lab where I currently work, as such , I must buy all offtheshelf.
Do you agree the following is the cheapest option...It'll cost £59 total...seems a lot?


24V lithium ion battery and charger £48
Batt and charger

Buck Converter: 18-35v in 12v out at 10A £11
Buck 24V to 12V

B625-261 Router
Router

 

[For The Popcorn]

Why do you need a mobile router?

Your phone apparently has a hotspot/internet sharing feature, so turn it on, connect your computer to your phone's hotspot and you have internet via your cell connection.

 

[Flyback]

Thanks very much, that sounds a great idea.
Of course, i dont have this smartphone on a contract, i just top up its SIM with £10 PAYG whenever i need it. But thats ok....its still worth doing. -And avoids buying all that charger/batt/Buck !!

(i had initially intended to use the router's SIM inside the smartphone to go on Teams (then i wouldnt have needed to pay £10 topup) ...but of course the smartphone doesnt do Teams so thats a moot point anyway)

 

[Flyback]

It turns out that i need to buy the battery and power supply after all...since no smartphone battery would last for a 1 hr teams call with video. Also, smartphones dont have enough uplink/downlink speed for a video teams call...specially if there was more than 2 people on the video call.

 

[crutschow]

Can't you charge the phone from your car battery?

 

[Flyback]

Thanks, but i darent do that, in case the 6 year old car battery is on the way out.

 

[crutschow]

Thanks, but i darent do that, in case the 6 year old car battery is on the way out.

So you are taking a chance on being stranded in your car by a dead battery which supplies at least a hundreds amps to the starter, but you are concerned about the small current a cell-phone charger takes.

 

[Flyback]

Thanks, it'll be a one hour video based teams call. The router takes 12v, 2A. The laptop will take its bit too.
Just maybe it mightnt be able to give the full needed starter current after that.

 

[For The Popcorn]

Why do you need a 24v battery and buck converter? Seems like you often complicate matters for yourself.

 

[Flyback]

24v batt is common size and most cheap dcdc's are bucks...as such, i need higher volts than 12v, so going for 24v.
24v batt could slip down to 18v whilst discharging, but thats still fine for bucking from 18 to 12v
What gates me is how expensive the "system" is...batt, charger and buck....£59...wow

 

[For The Popcorn]

Oy vey.

 

[crutschow]

How about a 12V, 2A, 6Ah backup supply such as this?