User Manual
Page 273
...° C) Disposal of Lithium Ion (LiIon) Batteries For safe disposal options of your battery's performance. ⅷ Use only Sprint-approved batteries and desktop chargers. Using other batteries or chargers voids your warranty and may need recharging if it no longer provides acceptable performance. These chargers are designed to replace the battery when it has not been used...
...° C) Disposal of Lithium Ion (LiIon) Batteries For safe disposal options of your battery's performance. ⅷ Use only Sprint-approved batteries and desktop chargers. Using other batteries or chargers voids your warranty and may need recharging if it no longer provides acceptable performance. These chargers are designed to replace the battery when it has not been used...