VIYISI Power Bank 30000 mAh 22.5W Fast Charging Battery Pack USB C Portable Charger with 4 Outputs & 3 Inputs for Samsung iPhone iPad Android PhonesCarbonfree Certified

Excellent at powering up various bits of kit. It will take a while to charge up, as can be expected with such a powerful device. It packs a lot of juice!Do be aware that it is around 3 times heavier than a lesser 10000mA model. (300g seems to equate to10000mA in most brands.)It's solidly built, has all the ports you're likely to need and charges up your devices at a good pace. Recommended.

If you need a heavy duty power bank, like I did, for repeated charge cycles without being able to recharge the bank then this is greatThe obvious downside is it’s not a lightweight, briefcase/ backpack unit but that wasn’t a problem for meGreat (not so little) unit!!

once charged lasts a long time but does take a long time to fully charge and is alo very heavy

Superb and massive capacity. It is a bit heavy which is expected. Plenty of USB ports and would definitely buy again.

Excellent Product. Excellent value

The battery pack is extremely slow to charge and does not offer the capacity as stated in the disruption. I left to charge overnight at it only reached 42% capacity. The weight is heavy however it is expected, however I am really disappointed as it does not meet even basic expectations.I have no idea if the one I purchased is faulty but please do not be fooled by the reviews.

Brilliant lasts forever on a full charge

I haven’t used it yet, just unboxed and started to charge as per the instructions.I must say it’s been 2 hours and only 9% has gone on from the 80% it had. It could be the plug, but I’ve noticed a review saying this is slow to charge and they’re not kidding. I just hope it holds the charge well!!!