The battery brought my 4000 toothbrush back to life. You only need to charge once a week or so. Only the connecting wires (flat metal) caused me some trouble, because they didn't like the solder at all. I ended up taking them off (one broke off voluntarily as they are electrically welded to the battery posts) and used the leads from the old battery and soldered them to the posts. The battery must have either a manufacture date or an expiration date. And adding a simple + and - sign for polarity might help. In any case, the investment was worth it!
Wild Fuel Dental Probiotics: Fresh Breath & Healthy Bacteria Support - Vegan, Cruelty-Free Chewable Tablets for Oral Health - 45 Mint Flavored, Sugar-Free Travel Tin
14 Review
Breath Me TM 50pcs Black Fiber Reed Diffuser Refill Sticks 12 inch - Elegant Home Fragrance Replacement
11 Review
🦷 Colgate Max Fresh Whitening Toothpaste with Breath Strips, Clean Mint, Limited Edition - 6 Oz, 24 Ounce (Pack of 4)
10 Review
BLIS Fresh Breath Kit: Potent BLIS K12 Oral Probiotic for Bad Breath & Halitosis Treatment - Clinically Proven Mouthwash, Tongue Scraper, Lozenges - 4 Week Supply
11 Review