# Case Study: How a Navy Veteran Saved Hundreds on Health Tech Using Smart Battery ROI
As healthcare technology advances, the “hidden costs” of maintaining devices like battery replacements can quietly add up.
We recently analyzed a fascinating, real-world data set from a Navy Veteran that proves how a small change in battery strategy can yield massive long-term savings.Our veteran uses an Alpha-Stim M device to manage insomnia. By sending a specialized signal via ear clips, the Cranial Electrotherapy Stimulation (CES) quiets his rambling thoughts, helping him fall asleep in about 15 minutes.While the device is a lifesaver, its power requirements can get expensive.
The Cost Dilemma: Disposable vs. Rechargeable
The device manual highly recommends Energizer Ultimate Lithium AA batteries.
The Cost: ~$30.50 plus tax for an 8-pack.
The Performance: A pair lasts for 59 hours (59 one-hour nightly sessions).
The Catch: Over years of nightly use, continuously buying these disposables creates a heavy financial drain.
To beat the high cost, he switched to XTAR 1.5V AA 4150 Lithium-ion rechargeable batteries, rotating through 3 distinct sets. Here is what his meticulous daily log reveals after years of use:
The Real-World Data
Run Time: A pair of XTAR rechargeable lithiums delivers 28 to 30 hours of use per charge (roughly half the lifespan of the premium disposable).
The “Top-Off” Strategy: To combat minor self-discharge while a set sits waiting in rotation, he uses an XTAR VX4 charger to “top off” the standby set right before putting them into the Alpha-Stim. This optimization consistently squeezes out a full 30 hours of use.
Longevity: He has tracked 33 total set changes across his 3 sets, averaging 29 use-nights per charge over the lifespan of the batteries.
Doing the Math (Working Backward)
By tracking his 957 total daily set uses, we can map out exactly how long these three rechargeable sets have been in active service:
$957(total uses)/30.41(average days per month) = 31.46 months
$Total Time in Service: 2 years, 7 months, and 14 days (and still going strong!).
The Takeaway
Each of his 3 XTAR rechargeable sets has been cycled roughly 11 times. If he had used disposable Energizer Ultimate Lithiums for those same 957 nights, he would have burned through roughly 32 batteries—costing over $120.
Instead, his 3 sets of rechargeable XTARs paid for themselves almost immediately and continue to hold a stellar charge nearly 3 years later.
When managing chronic conditions with home health tech, don’t just look at the upfront cost of the device. Track your consumables, do the math, and look for high-quality rechargeable alternatives. Your wallet will thank you.
