Check the listing for details. VIPER 7941V 7944V real NEW Replacement Battery holds 20% longer charge. Condition: New. Listed at 15.00 USD. Viper new replacement battery holds 20% longer charge for 7941V (Silver Remote) All Date codes7944V (Black Remote) All Date codes Also WORKS FOR: 7941P, 7944P (PYTHON) 7941X, 7944X (CLIFFORD) Now with LIFE TIME replacement warranty (**we provide a life time replacement if it ever goes bad for no extra fee) FREE SAME DAY SHIPPING !! for all 50 states Low rates for Canada and all over the world These are the new upgraded 3.7V 600Mah batteries that last 20% longer instead of the 3.7V 560MAh of the original Easy to replace yourself Viper Responder HD 2-Way SST Color SuperCode Remote7941VLifetime Warranty:Wa7941**We will replace the battery purchased from us as long as you own your remote, as long as we have these in stock and customer pays for the shipping)