Optimized for automatic support generation by slightly increasing 90degree surface angles where no supports are needed, changed mounting dimensions to 29mm separated holes; same as dewalt power adapters so users should be able swap dewalt with milwaukee battery by simply swapping battery adapters without drilling new mounting holes. Mounting holes separation distance are also whole numbers now making it easier to work with. NOT for use in hot environments exceeding 60 degrees Celsius (140 degrees Fahrenheit); please purchase our PETG version for using in outdoor and hotter environments. Attention: Do not use this adapter to charge your battery Do not short circuit battery or draw more than 20amps continuous Disconnect the battery before it reaches 15volts, (prolongs battery life) Do not leave battery charged at 100% for long periods of time, recommended to store battery at 70% charge (prolongs battery life) Do not leave battery outdoors (especially in hot climates)