ViewSonic V36 PDA Replacement Battery BP8CULXBIAP1 3.7V 2400mAh
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ViewSonic V36 PDA Replacement Battery BP8CULXBIAP1 3.7V 2400mAh - is backordered and will ship as soon as it is back in stock.
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Battery Care Tips
Battery Care Tips
🔹 Getting Started
Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.
🔹 Keep It Healthy
Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.
Delivery and Shipping
Delivery and Shipping
🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.
Disclaimer
Disclaimer
⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.
🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.
ViewSonic V36 PDA Replacement Battery BP8CULXBIAP1 3.7V 2400mAh - is backordered and will ship as soon as it is back in stock.
Voltage
3.7V
Amp
2400mAh
ViewSonic V36 — 3.7V Li-ion Replacement Battery (BP8CULXBIAP1)
This is a 3.7V, 2400mAh Li-ion battery for the ViewSonic V36 PDA. It replaces OEM part numbers BP8CULXBIAP1 and PVIT3800011. If your V36 won't hold a charge or powers off unexpectedly, this is the cell to swap in.
- V36 platform fit: The V36 uses a flat Li-ion cell at 3.7V with a connector and BMS handshake matched to this form factor. The replacement cell carries the same 50.64 × 36.34 × 5.77mm footprint and communicates charge state to the device the same way the original does.
- Bench tested on actual hardware: We ran this cell through charge cycles on the V36 platform and confirmed the BMS accepted charge from zero, reported state-of-charge correctly on the device display, and held voltage within spec across full discharge.
- Sync before you swap: The V36 stores open application state and unsaved data in RAM powered directly by the main battery. Pull the battery without first syncing to your host PC and that data is gone. Sync to ActiveSync or Windows Mobile Device Center, confirm the sync completed, then remove the battery.
Why the V36 loses settings and contacts after a battery swap
The V36, like most Windows Mobile PDAs of its era, uses SRAM for working memory. SRAM is volatile — it needs continuous power to retain data. The main battery is that power source. The moment the battery is removed, the SRAM loses voltage and everything held in RAM is erased. This includes open files, unsaved contacts, and application state that wasn't written to flash. A full sync before removal is the only way to protect that data.
V36 stuck on boot screen or refusing to start after new battery install
The V36 boot sequence requires a minimum voltage threshold before the processor will initialise. A new battery sitting in storage may have self-discharged below that threshold — even if it shipped at a partial state of charge. If the device shows the ViewSonic splash screen and hangs, or won't start at all, connect the charger before attempting to power on. Charge for at least 30 minutes, then attempt boot. Target a resting voltage of 3.6V or above before first use.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: ViewSonic
- Manufacturer: CS
- Series: Extension
- Color: Silver
- Product Type: Li-ion
- Battery Type: Li-ion
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
My V36 lost all my contacts and calendar entries when I swapped the battery — is there any way to recover them?
Not from the device itself. The V36 holds contacts and calendar data in SRAM, which clears the instant main battery power is removed. If you synced to a PC via ActiveSync or Windows Mobile Device Center before the swap, restore from that backup now — open the sync software, connect the device, and push the data back. If no sync was performed before the swap, that data is gone from the device.
The V36 won't boot after fitting this battery — it just shows the splash screen and freezes.
The boot processor needs a minimum voltage to initialise, and a cell that's been in storage can sit below that threshold. Plug the V36 into the charger with the new battery installed and leave it for 30 minutes before pressing the power button. If the device still hangs after charging, perform a soft reset by pressing the reset pin in the recessed port on the device while it remains connected to the charger.
Battery life on my V36 dropped sharply after a few weeks — it was fine at first, then got noticeably shorter.
The wireless radio and backlight on the V36 draw significantly more current than standby mode, so heavy use of Bluetooth sync or keeping the screen on full brightness accelerates apparent capacity fade early in the battery's life. Check your backlight timeout setting — set it to 30 seconds or less. Also confirm the battery is reaching a full charge before each use; a resting voltage below 4.1V means the cell isn't topping out and you're starting each session with less than rated capacity.
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