There is a much easier way to get the batteries out. If you look at the 2 cells on either side (left and right), you will notice that they put them in an area that is slightly lowered. This is by design. To remove the batteries, pour a small amount of 90% isopropyl alcohol on both sides and let it sit for about 30 to 45 mins. It will dissolve the glue and you can gently then lift out the batteries without any prying. After you remove the batteries, simply wipe up any remaining alcohol, let it dry, buff it clean, and insert the new battery. Considerably easier and safer than potentially damaging the battery packs. If you are putting the same battery pack back, just use double sided tape. IMPORTANT NOTE: ALWAYS BE SAFE USING ISOPROPYL ALCOHOL AROUND FLAMES OR ANYTHING THAT MIGHT MAKE IT BURN. ALSO, NEVER ATTEMPT TO PRY THE BATTERIES IN ANY WAY IF ANY ALCOHOL IS STILL POTENTIALLY PRESENT!! WAIT UNTIL IT IS EVAPORATED!!