Made In I NDIA
Brand new 12 Voltage Lead Acid Battery Desulfator SLA  AGM Battery Life Enhancer with reverse polarity protection on board
Function: This desulfator can get the crystalline sulfate dissolved back to the electrolyte, thus restoring the battery function and the electrolyte strength.
Using Guidance: Connect the red wire to the positive pole, connect the black wire to the negative pole It can be connected to the battery and other 12v system all day along. Product Features
Input Voltage:12V DC
Output Voltage(Peak):30V
Rated Current(Peak):40mA
Frequency Range:1.50 KHZ
INSTRUCTION
1.) The desulfator should be installed as close as possible to the battery terminals. (within 14 inches, or 35 cm)
2.) You may trim the wire leads with wire cutters/strippers to work best for your application. (shorter is better) 
3.) Install the Red wire to the positive (+) terminal on your 12 volt battery.
4.) Install the black wire to the negative(-) terminal on your 12 volt battery.
5.) Verify that the LED is on, you might also be able to hear a “buzzing” sound
6.) The best results for recovery will occur within the first 4-5 weeks. If left connected longer, desulfating will continue but at a slower pace.
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