background image

6  |  SAMLEX AMERICA INC.    

 

SECTION 3  |  

General Information

3.1 DESCRIPTION

SunChargers SC-05 and SC-10 are portable solar panels designed for float charging of 12V 
nominal rechargeable Lead Acid batteries like those used in cars, boats, RV’s, motorcycles, 
All Terrain Vehicles (ATV) and Powered Water Crafts (PWC). These can also be used as DC 
power sources  to charge small electronic devices like cell phones, iPods, iPhones, PDAs etc. 
The rechargeable batteries inside these small electronic devices are charged through their 
charging adapters.

The panel float charges the battery directly through built-in Blocking Diode (Forward Voltage 
Drop, V

f

 = 0.55V). External Charge Controller is not necessary (see Section 5.2)

3.2  SELF DISCHARGE AND TRICKLE CHARGING OF LEAD ACID 

BATTERIES UNDER STORAGE

3.2.1 Sulfation Due to Under Charging: 

A fully charged Lead Acid Battery comprises of 

(i) Positive Plates: Lead Dioxide, (ii) Negative Plates: Sponge Lead and (iii) Electrolyte: 
Mixture of 65% water and 35% Sulfuric Acid with Specific Gravity = 1.265 at 80°F. During 
discharging, electro-chemical reactions lead to: (i) At Positive Plates: Conversion of Lead 
Dioxide to soft Lead Sulfate crystals, (ii) At Negative Plates: Conversion of Sponge Lead to soft 
Lead Sulfate crystals and (iii) In Electrolyte: Conversion of portion of Sulfuric Acid to water 
leading to reduction in Specific Gravity (<1.1 for fully discharged condition).  During re-
charging, electrochemical reactions are reversed leading to: (i) At Positive Plates: Conversion 
of soft Lead Sulfate crystals to Lead Dioxide, (ii) At Negative Plates: Conversion of soft Lead 
Sulfate crystals to Sponge Lead and (iii) In Electrolyte: Conversion of portion of water to 
Sulfuric Acid leading to increase in Specific Gravity (1.265 for fully charged condition).

3.2.2 Effects of Sulfation:

 If Lead Acid battery remains undercharged over a long period 

of time, the soft Lead Sulfate crystals of the uncharged portion will get hardened and will 
be difficult to reconvert through normal charging (refer to Section 3.2.1 above regarding 
charging and discharging reactions). Further, these Lead Sulfate crystals are non-conducting 
and hence, introduce increased internal resistance in the battery. This increased internal 
resistance introduces internal voltage drop during charging and discharging. Internal voltage 
drop during charging results in overheating and undercharging and formation of more Lead 
Sulfate crystals. Internal voltage drop during discharging results in overheating of the battery 
and reduction in terminal voltage of the battery. Overall, this results in poor performance of 
the battery. 

3.2.3 Self Discharge:

 Self discharge of Lead Acid Battery is the electrical Ampere Hour (Ah) 

capacity that is lost when the battery is not being charged and there is no load connected 
to it. i.e. sits idle in storage. Self-discharge is caused by electro-chemical processes within 
the battery and is equivalent to application of a small electrical load. For example, Lead Acid 
battery stored at 30°C / 86°F would self-discharge at around 1% of remaining capacity every 
day. Self-discharge increases with increase in temperature. 

Self-discharge of the battery under long term storage will create condition equivalent to 
under charging and consequently, lead to sulfation as explained at Sections 3.2.1 and 3.2.2 
above. To prevent this, the battery should be “Float Charged” as explained in Section 2.2.4. 

Содержание SC-05

Страница 1: ...SunCharger Portable Solar Panel Models SC 05 SC 10 Please read this manual BEFORE operating the units Owner s Manual...

Страница 2: ...MANUAL Index SECTION 1 Safety Instructions 3 SECTION 2 Layout Dimensions 5 SECTION 3 General Information 6 SECTION 4 Principles of Operation 9 SECTION 5 Installation Operation 11 SECTION 6 Specificati...

Страница 3: ...read these instructions BEFORE installing or operating the solar panel to prevent personal injury or damage to the solar panel WARNING CAUTION 1 WARNING To reduce risk of explosion do not install in m...

Страница 4: ...atteries g n rent de l hydrog ne et de l oxyg ne pendant la charge ce qui entra ne l volution du m lange gazeux explosif Des pr cautions doivent tre prises pour ventiler la zone de la batterie et suiv...

Страница 5: ...or Bare male terminal is Negative Female terminal is Positive 2 2 LAYOUT DIMENSIONS OF ADAPTERS 355 mm 355 mm Fig 2 4 SAE to Ring Terminal Adapter Fig 2 3 SAE to 12V Accessory Plug Adapter 2A 2B 1 7 8...

Страница 6: ...ls to Sponge Lead and iii In Electrolyte Conversion of portion of water to Sulfuric Acid leading to increase in Specific Gravity 1 265 for fully charged condition 3 2 2 Effects of Sulfation If Lead Ac...

Страница 7: ...maintenir une batterie compl tement charg e en vertu de l entreposage Cette faible consommation est destin compenser l auto d charge en vertu de l entreposage Cette faible valeur du courant ne sera p...

Страница 8: ...n in vehicles Electronics such as clocks vehicle alarms etc add to the drain of the battery even when the ignition is off To charge small electronic devices like cell phones iPods iPhones PDAs etc The...

Страница 9: ...05 0 39A SC 10 0 79A 3 Max Power Point PMP SC 05 5W SC 10 10W Short Circuit Current ISC SC 05 0 42A SC 10 0 85A Power Curve VxI Voltage in V Open Circuit Voltage VOC SC 05 15 3V SC 10 15 3V NOTES 1 Vo...

Страница 10: ...effect on the output voltage a Negative Voltage Temperature Coefficient results in increase in the voltage at lower temperature and decrease in the voltage at higher temperature For SC 05 and SC 10 t...

Страница 11: ...to Ring Terminal Adapter Fig 2 4 CAUTION Bare bullet type of terminal on the SAE Adapters 5 in Figs 2 3 and 2 4 will be carry ing 12VDC battery voltage when the Adapter is connected to the 12V batter...

Страница 12: ...13 8V Higher Float Voltage will cause over charging leading to boiling over heating loss of water damage to the battery c After the battery has been fully recharged direct Solar Trickle Charger like...

Страница 13: ...h the Adapter Cable Set 1 Fig 2 3 to the 12V Power Outlet in the vehicle Make sure that the plug is pushed in completely CAUTION In some vehicles the 12V Power Outlet gets connected to the vehicle s s...

Страница 14: ...Negative to the Negative Terminal on the battery 5 6 DIRECTLY POWERING SMALL ELECTRONICS DEVICES LIKE CELL PHONES IPODS IPHONES PDAS ETC Please use the following method for directly powering small ele...

Страница 15: ...Operating Temperature 40oC to 85 C 40oF to 185oF Dimensions Width x Height x Thickness 204 x 285 x 13 2 mm 8 03 x 11 22 x 0 52 in 360 x 285 x 13 2 mm 14 11 x 11 22 x 0 52 in Weights 0 44 Kg 0 8 lb 0 5...

Страница 16: ...a reasonable number of opportunities to do so Warranty service shall be performed only by the Warrantor Any attempt to remedy the defect by anyone other than the Warrantor shall render this warranty...

Страница 17: ...SAMLEX AMERICA INC 17 Notes...

Страница 18: ...18 SAMLEX AMERICA INC Notes...

Страница 19: ...SAMLEX AMERICA INC 19 Notes...

Страница 20: ...umbers Ph 1 800 561 5885 Fax 1 888 814 5210 Local Numbers Ph 604 525 3836 Fax 604 525 5221 Website www samlexamerica com USA Shipping Warehouses Kent WA Plymouth MI Canadian Shipping Warehouse Delta B...

Отзывы: