have tested 10x of these this very basic powerbank since 6 months

none have failed or malfunctioned. 20.000mAh is “okay” to charge up a phone 3 to 4 times (which is not sooo much but given the price of below 30 Bucks this is still okayish, just buy two or three if you need more energy 😀)

What is interesting to see: that instead of a bundle of standard 18650 cells (welded together) ANSMANN is using flat polymer (Li-poly) batteries:

  • “In comparison to liquid electrolytes and solid organic electrolytes, polymer electrolyte offer advantages such as increased resistance to variations in the volume of the electrodes throughout the charge and discharge processes, improved safety features. excellent flexibility and processability.” (Wiki)
  • “Overall, lithium-polymer is slowly replacing lithium-ion in the smartphone industry due to its superior safety” (source)
  • Safety & Reliability is also the No#1 priority at ultimate-solar.com
  • no one wants a burning powerbank at home, in your pocket or on an aircraft (but it is STILL allowed to take powerbanks on flights)
  • or they just might go up in flames in the middle of the night and set a house on fire as has happened in Austria
  • while “DO IT YOURSELF” is great PLEASE REFRAIN FROM BUILDING A POWERBANK BECAUSE A LOT CAN GO WRONG! (including things that are not your fault, like bad BMS)

ANSMANN Powerbank 20000mAh – 2-port power bank with LED status indicator – external battery with 2.1A, portable charger compatible with Apple iPhone, iPad, Samsung, Huawei, Xiaomi, etc.

Ansmann Powerbank 20.8 Powerbank 20,000mAh Specifications

CELL CHEMISTRY Lithium polymer
VOLTAGE 3.7 V
NOMINAL CAPACITY 20000 mAh
PORTS 2× USB
OUTPUT VOLTAGE 5V DC
INPUT VOLTAGE 5V DC
OUTPUT 2× USB – 5V DC / 2,4 A
MAXIMUM OUTPUT CURRENT 2.4 mA
ENERGY CONTENT 77 Wh

WARNING! Victron 12V to 230AC Phoenix DIRECT (1200Watt!) CAN NOT POWER MOST HAIR DRYERS! 🙁

EN: 12V+24V(faster) Solar Cooking wihtout expensive and unreliable Battery

ES: Cocina solar de 12V+24V(rapido) sin batería cara y poco fiable

DE: 12V+24V(schneller) Solar (Wasser) Kochen ohne teure und unzuverlässige Batterie

12V:

24V:

Grosser Vorteil VICTRON: NO Battery REQUIRED 😀 +Kaltstart +Notstartfähig 😀
Leider braucht STECA oder EPEVER immer ZWINGEND eine Batterie zum Start! (mit mind 10V! DAS IST IM ERNSTFALL SEHR SCHLECHT!)
0.5L im 24V Wasserkocher braucht 15min (~300W)
Schon um EINIGES flotter als mit 12V 😀
Video NICHT von Victron gesponsert, SolarLaderegler eigenem sehr knappen Geld bezahlt)

Bulk Spannung = Absorptions-Spannung (hier hat man nicht 100% tig alles übersetzt :D)

WERBUNG:

+Victron Energy SmartSolar MPPT 100V 30 Amp 12/24-Volt Solar Laderegler +Bluetooth:
https://amzn.to/45Ctokx (man KANN die Output Voltage 12V oder 24V einstellen (in der App oben rechts auf Rädchen, muss testen was maximale Output Voltage ist :D)

+All Ride Wasserkocher 1,0 L 24V/300W, 871125252614, Schwarz (24V definitiv besser 😀 = mehr power = kocht schneller) (All Ride normaly schon okay) https://amzn.to/3FhXcbD

+435 Watt Trina Solar Vertex S+ NEG9R.28 Glas/Glas Photovoltaik Module https://amzn.to/3FhXxep

+4x Batterien https://www.pollin.de/p/quatpower-blei-akkumulator-lb12-12-12-v-12-ah-271198
(können kurzzeitig 50A Entladung! D.h. 600W pro Akku!)

+ 12V/24V KFZ Buchse https://amzn.to/45PEpzb (mit Sicherung 20A (max 480W) oder 25A (bis 600W)

ACHTUNG! Es gibt auch KFZ Buchsen mit Digitalanzeige, welche aber evtl. keine 26V vertragen!

DE: 0.5L im 12V Wasserkocher braucht 30min (140W) D.h ES GEHT 😀 aber langsam: Video NICHT von Victron gesponsert, SolarLaderegler eigenen eigenem sehr knappen Geld bezahlt)

EN: 0.5L in 12V kettle takes 30min (140W) I.e IT WORKS 😀 but slowly: video NOT sponsored by Victron, solar charge controller own very scarce money paid)

Watt Meter: Diymore (wie Turnigy) 200A Power Analyzer, Watt Messdetektor https://amzn.to/3M0lCKu

Comparison of 12V water boilers: https://outdoor-brueder.de/reisewasserkocher-test/

Vergleich von 12V Wasskochern: https://outdoor-brueder.de/reisewasserkocher-test/

(24V would be better)