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Want to use two batteries—doubling capacity : Two ResMed batteries can now easily be used and charged together with this Battery Coupler Kit. The Battery Coupler Kit is only to be used with the ResMed Power Station (RSP) II. Simply connect each end of the coupler cable to each battery. The other end connects to your ResMed S9 CPAP Machine. The ResMed Power Station CPAP Battery is not included but can be purchased from our website here. This item includes: Battery Coupler Velcro Strap ©ResMed 2010 Used with Permission to all WebPages with ResMed pictures
