The amount of battery a 100W solar panel can charge depends on the discharge capacity of the battery. Based on the 10 hour charge rate, it should be able to charge an 80Ah battery.
The maximum charging current of a 2V 100W solar panel is about 9A. The longest effective lighting time in Lhasa per day is about 5.5 hours . For other regions, it is calculated at 4 hours, so it can reach 4 hours*. 9A = 36 Ah is more, even 40 Ah.
In other words, if the 80 Ah battery discharges more than 40 Ah per day, it may not be fully charged.
In addition, the maximum charging current of lead-acid batteries is 0.3C, or 0.3*80Ah=24A. They cannot be charged with a current greater than this for a long period of time.
This must be considered holistically.
The calculation of the discharge quantity is the discharge current multiplied by the discharge timerge. For example, if the load is a street lamp, 12V30W, then the maximum working current is about 3A, then the discharge quantity will be 30Ah after working about 10 hours per night.
Under the irradiation of the sun, light energy is immediately converted into electrical energy. The direct current it emits can be directly charged to cell phones and calculators; electrical energy can also be stored in the battery; inverted to 220V AC. The most commonly used are amorphous silicon, monocrystalline silicon and polycrystalline silicon, which are widely used. A 100W silicon battery covers an area of about 100 square meters, has a lifespan of 20 years and a shelf life of 5 years.
Technical parameters of silicon solar cells
Power
(w) Size
(mm) Open circuit voltage
< p> (v) Operating voltage(v) Cshort circuit current
(A) Operating current
(A) Weight
(kg) Remarks
5,240* 290*25 21 17.3 0.34 0.29 1 Polysilicon
10 290*330*25 21 17 0.7 0.6 1.3 Polysilicon
15 400* 350 *25 21 17 1 0.9 1.9 Polysilicon
20 609*290*25 21 17 1.4 1.2 2.9 Polysilicon
Note: The following products -above costs 39 yuan/W, and can also be transformed into 75W, 80W, 85, 160W, 165W, 170W, 175W high power
The price is 45 yuan per W.
< p>Technical parameters of solar cell wafersProduct name
Specifications
Package dimensions
Parameters and weight< /p>
Price
Remarks
Amorphous silicon solar cell combination panel
152 5 × 152.5 × 20
< p> 415. ×315 × 4001w/7.5v,120ma, 0.4kg
45 yuan/piece
Aluminum alloy border
Amorphous silicon solar chip
152. 5 × 152.5 × 2
415 × 315 × 400
1w/7.5v, 120ma, 0.17kg
< p> 39 yuan/pieceGlass package
Amorphous silicon solar chip
60 × 90 × 2
Carton 400 pcs
0.1W/3V, 30mA, 0.042kg
9 yuan/pcs
Glass package
Chip amorphous silicon solar panel
60 × 76 × 2
400 pieces in a carton
0.07w/3v,24ma, 0.039kg
< p>8.5 yuan/pieceGlass packaging
Lawn lamp chip, single crystal silicon. Circular diameter 8.5CM, working voltage 1.8V, power supply 110MA, power 0.2W