Soldered Support:
Based on your information, the current consumption is very small (50mA over 18 months), and you can solve this problem in several ways:
a) Always have a source that will charge the internal battery, with cables drawn from the battery as you suggested
b) Same as (a), but powered from another, larger battery
You have a source (battery or wall adapter) which goes through a charger to the battery. According to the datasheets you provided, the charger should charge with very small current. In this document: https://industrial.panasonic.com/cdbs/www-data/pdf/AAA4000/AAA4000COL17.pdf on page 2, first figure, the row for VL2330 shows that the battery should be charged at 3.5V with a 180ohm resistor in series. The diode protects against current backflow and a regular voltage regulator can be used here.
You need:
a) a power source
b) a voltage regulator set to 3.8V
c) a Schottky diode
d) a 180ohm resistor
If your source is an AC adapter, you can easily lower the voltage to 3.8V with a regulator: Step-down modul s LM2596S – Soldered Electronics
You can always use a Schottky diode: Soldered: Open-Source Electronics, Boards, Sensors & Modules – Soldered Electronics
And a 180ohm resistor of any power rating.
If your source is another battery, it’s best to use an LM317 and tune its output to 3.8V: https://e-radionica.com/hr/lm317-podesivi-regulator-napona.html
Original message (Croatian)
hvala Vam na upitu i isprike na našem kasnom odgovoru.
Nažalost, ne možemo ovaj projekt odraditi za Vas, ali možemo ovako u slobodnom stilu prokomentirati par ideja kako riješiti ovaj problem.
Prema Vašim info, čini se da je potrošnja iznimno mala (50mA u 18 mjeseci), ovaj problem možete riješiti na više načina:
a) imati uvijek izvor koji će puniti internu bateriju, s izvučenim kablićima iz baterije, kako ste i predložili
b) isto kao i a, ali se napaja iz druge, veće baterije
Dakle, imate izvor(baterija ili zidni) koji kroz punjač ide do baterije. Punjač, prema datasheetovima koje ste poslali, treba puniti vrlo malom strujom. U ovom dokumentu: https://industrial.panasonic.com/cdbs/www-data/pdf/AAA4000/AAA4000COL17.pdf
na stranici 2, prva slika
redak za VL2330
prikazano je da bateriju treba puniti na 3.5V s otpornikom u seriji od 180ohm, dioda je za zaštitu toka struje te je tu najobičniji regulator.
Dakle, trebate:
a) izvor
b) regulator na 3.8V
c) schottky diodu
d) 180ohm otpornik
Ako je izvor strujni(iz utičnice, npr.: Soldered: Open-Source Electronics, Boards, Sensors & Modules – Soldered Electronics), s ovim regulatorom možete vrlo lako spustiti napon na 3.8V: Step-down modul s LM2596S – Soldered Electronics
Schottky dioda uvijek možete koristiti Soldered: Open-Source Electronics, Boards, Sensors & Modules – Soldered Electronics
i 180ohm otpornik bilokoje snage
Ako je izvor druga baterija, najbolje je uzeti LM317 i njegov izlaz naštimati na 3.8V https://e-radionica.com/hr/lm317-podesivi-regulator-napona.html
Za sva ostala pitanja stojimo na raspolaganju.