The response is good to get, at least they bothered and supplied information. My "question" is why do you need a tool set and 30 minutes to change a battery? Both cameras I have have batteries, you remove a cover, take out the old and slot in the new, every mount has a battery pack, again remove the plastic holder lever out the old put in the new, Mobile phone the same - open up the rear, lever out the old one and drop in a new one. All the astro torches are a simple unscrew the end dro pout the old, drop in the new. No battery change take more the a minute. So why a set of tools and 30 minutes for what is a simple change of batteries ? I use a Meade ETX 70 for grab and go, I buy a set of 12 AA's from Poundland and drop 6 in the holder and use the scope. If they run down I take out the "old" 6 and drop in the new 6 and off I go again. If they cannot be swapped over quickly and easily then you cannot take a spare set with you, which to me limits the usefulness of the scope. In marketing term they have it wrong as the only time to buy a new/spare battery is when the present one fails in X years time. If they could be replaced in seconds then you buy the mount and a spare now, for use on over night observing sessions..