Quick answer
For a Honeywell Dolphin CT40 Gen 1, choose a 4000mAh replacement battery from a specialist like CELLONIC. This capacity matches the original spec and provides a full shift of scanning. Look for a 3-year guarantee and fast delivery to minimize downtime.
Capacity matters for shift-long use
The Honeywell Dolphin CT40 Gen 1 originally ships with a 4000mAh battery. Replacing it with the same capacity ensures you get through a full workday without recharging. Lower-capacity options may save money upfront but can require a midday swap, which slows down warehouse or field operations.
Fit and compatibility
The CT40 Gen 1 battery is a specific shape and connector type. Not all 4000mAh batteries fit this model. When shopping, confirm the replacement is listed for the Dolphin CT40 Gen 1 (not the CT40 or CT40 XP). A direct-fit battery avoids the risk of loose connections or device damage.
Warranty and support
A longer warranty signals confidence in the battery's quality. A 3-year guarantee, like the one offered by CELLONIC, protects your investment. Also check delivery speed—if your scanner is down, fast shipping from a specialist with UK stock can get you back to work quickly.
Decision rules for buying a CT40 Gen 1 battery
- Match capacity to original: The CT40 Gen 1 uses a 4000mAh battery. Choosing a different capacity may cause shorter runtime or fit issues. Stick with 4000mAh for reliable shift-long use.
- Check model compatibility: Batteries for other Honeywell scanners or non-Honeywell devices (like Dyson vacuums) won't fit. Look for explicit 'CT40 Gen 1' listing. Only buy a battery labeled for the Dolphin CT40 Gen 1.
- Prioritize warranty and delivery: A 3-year guarantee and fast shipping reduce downtime and financial risk. Specialist suppliers like subtel (since 2004) offer both. Choose a seller with a strong warranty and quick delivery.
Product facts
- Battery for Honeywell Dolphin CT40 Gen 1 3.8V 4000mAh from CELLONIC: 4000mAh 3.8V Honeywell Battery Replacement - PDA Battery Specialists Since 2004 - Fast UK Delivery - 3-Year Guarantee This matches the original CT40 Gen 1 capacity, so you get the same runtime. The 3-year guarantee reduces risk, and fast UK delivery helps if you need a replacement urgently.
- Battery for Dyson V6, DC62, SV03, SV06, V6 Trigger, V6 Total Clean, Dyson 967810-21 4000mAh from CELLONIC - Battery with screws (Not compatible with a: 4000 mAh capacity provides longer run time for cleaning tasks. Direct fit for Dyson V6, DC62, SV03, SV06, V6 Trigger and V6 Total Clean models (part number 967810‑21). Includes mounting screws for a secure installation. This battery is for Dyson vacuum cleaners, not the Honeywell CT40. It shows that capacity alone isn't enough—you must match the device model exactly. The included screws are a nice touch for Dyson owners, but irrelevant for a CT40 buyer.
Who this battery is for
Best for
- Warehouse workers using the Honeywell Dolphin CT40 Gen 1 who need a full shift of scanning without recharging
- Businesses replacing multiple CT40 Gen 1 batteries and wanting a consistent 4000mAh capacity with a 3-year warranty
Not for
- Users of the Honeywell Dolphin CT40 (non-Gen 1) or CT40 XP—check your model number first
- Anyone looking for a battery for a Dyson vacuum, barcode scanner from another brand, or any non-Honeywell device




