HYT PD500 Replacement Battery 7.4V 1500mAh BL1502
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HYT PD500 Replacement Battery 7.4V 1500mAh BL1502 - 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.
HYT PD500 Replacement Battery 7.4V 1500mAh BL1502 - is backordered and will ship as soon as it is back in stock.
Voltage
7.4V
Amp
1500mAh
HYT PD500 / PD502 Series — 7.4V Li-ion Replacement Battery (BL1502)
This 7.4V 1500mAh lithium-ion battery replaces OEM part numbers BL1502, BL1504, and BL2010 in HYT PD500, PD502, PD505, and PD506 portable two-way radios. It fits the full PD500 series used by security, construction, and emergency services teams. Capacity is 1500mAh (11.1Wh), matching the standard OEM specification.
- PD500 series fit: The PD500, PD502, PD505, and PD506 share the same battery bay dimensions, contact pitch, and BMS handshake protocol — one pack covers the platform. The connector housing and latch position are identical across these models, so the same battery seats and locks correctly in all of them.
- Bench tested on actual hardware: We cycled this pack through charge and transmit load on a PD500 body. The BMS held steady through repeated PTT keying without tripping overcurrent cutoff, and the charger dock accepted the handshake and progressed to full charge normally.
- First insertion into the charger dock: If the dock LED shows a fault on first insertion, remove the pack, wipe the gold contact strip with a dry cloth, and reseat firmly. The HYT charger platform requires a clean contact cycle to complete the BMS handshake before charging begins.
Why the PD500 cuts out mid-transmission on a new BL1502
A new cell ships at storage voltage — typically around 3.6–3.7V per cell, not a full 4.2V. When you press PTT, the radio draws a sharp current spike to power the RF output stage. If the cell hasn't been charged first, that spike can pull the pack voltage low enough to trip the BMS overcurrent threshold before the transmission completes. Charge the pack fully before first field use. After a full charge cycle, the BMS handles PTT spikes without interruption.
Bar indicator stuck on two bars even after a full charge
The PD500 uses a voltage-threshold bar indicator — it reads pack voltage at rest and maps it to a bar count. A new cell at storage voltage will show fewer bars than expected even if the pack is functional. This isn't a fault in the battery; it's the radio reading a voltage that hasn't reached the upper threshold yet. Run the pack through one full charge in the dock until the LED goes green, then reinsert into the radio — the indicator will move to the correct bar count.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: HYT
- Manufacturer: CS
- Series: Standard
- Color: Black
- Product Type: Li-ion
- Battery Type: Li-ion
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
My PD500 drops from full TX power to a weaker signal partway through a long shift — new battery, not a depleted one. What causes that?
Sustained RF output draws continuous high current, and if cell impedance is even slightly elevated — common in a pack that hasn't completed a break-in cycle — voltage sags under that load. The radio's power control circuit reads the sag as a low-battery condition and steps down TX power to protect the RF stage. Run the pack through two full charge-discharge cycles before heavy use. After break-in, voltage sag under sustained TX load drops significantly and the radio holds full output power.
The charger dock blinks a fault LED and never clears, even after I reseat the battery several times. What's actually happening?
The HYT dock checks pack voltage before it opens the charge circuit — if the cell has dropped below the dock's acceptance threshold (typically around 6.0V for a 7.4V pack), the dock refuses to charge and holds the fault LED. This happens most often with packs that sat in storage for an extended period. To recover the pack, look for a "boost" or "wake" function on a compatible charger, or use a bench charger set to Li-ion recovery mode to bring the pack above 6.5V. Once above threshold, reseat in the HYT dock — it will accept the handshake and begin normal charging.
Radio powers on fine but shuts off suddenly when I press PTT — no warning, no low-battery indicator. What's going on?
This is a BMS overcurrent trip, not a dead battery. The transmit current spike — which can exceed 2A on the PD500 — exceeds the BMS threshold if the pack is cold or hasn't been fully charged yet. The BMS cuts output instantly to protect the cell, which reads as a hard power-off. Take the pack to a full charge first, and if the radio is cold (below 5°C), let it warm to ambient temperature before keying. After a full charge at ambient temperature, the BMS handles the PTT spike without tripping.
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