olijacek wrote: LED lighting, I think that with 5A it is max and if too much is 3A enough.
Poor choice (battery) unless it comes to power
emergency i.e. in the event of an occasional power outage in the network. The so-called
gel batteries , which are nothing but a variety of batteries
lead acid They are kept in a state of continuous charge, and if there is a need to take energy from the battery - it is recharged as soon as it becomes possible. In such conditions (similar to the conditions prevailing in a normally used car), all lead batteries have good durability. However, they wear out the faster the deeper they are discharged, and the longer the discharge (even partial) will last. Some of them have slightly improved resistance to deep discharge; then their durability is determined (e.g. 200 cycles), assuming that the time, and thus the discharge current, will be strictly defined. Discharging with a current both lower and higher than the rated current reduces the number of useful cycles: in the first case, the battery remains in a state of incomplete charge, in the second case - the battery temperature increases, and with it the lead sulphate recrystallization rate on the electrodes, which is commonly referred to as
sulfation . Other versions of lead batteries, including common car batteries, but also
gel marked "Designed for standby use" should in principle not be operated cyclically (full discharge - charge) because each such cycle noticeably and irreversibly reduces their capacity, but only used for buffer operation.
Batteries, on the other hand, are ideal for circular operation
alkaline , mp nickel metal hydride (NiMH). It does not hurt them at all either to fully discharge, or to stay in this state for any length of time. With this execution
hermetic (including "batteries" from AAA / R03 to D / R20) are also not sensitive to overcharging, provided that the current is limited to 0.1C (e.g. 1A for a 10Ah battery).
polarity reversal which can happen when the battery is too deeply discharged of cells with different charge levels connected in series. On the other hand, for ordinary lead batteries, overcharging is always harmful (water in the electrolyte decreases, gas bubbles crumble the active mass from the electrodes), while in the battery
gel it leads to its immediate destruction as a result of electrolyte stratification. Hence a particularly strict requirement for the end voltage of battery charging
gel which an ordinary lead acid charger cannot generally provide.
So it was better instead of the battery
gel purchase the appropriate number of NiMH cells (9 to 10 in case of 12v power supply). The most common
batteries R6s have a capacity of over 2.5Ah, R14s will have much more than 3.5Ah, while the relatively common R20 can reach up to 10Ah.
does not give voltage at the output, how should i fix it?
