US CPSC safety warning — stop using this battery
This battery may be physically compatible with your bike. That is not the same as being safe to use.
CPSC urges owners to immediately remove the battery from the e-bike and dispose of it following local hazardous waste disposal procedures, and states: “Do not sell or give away these hazardous batteries.” The warning names battery models RP-1304, RAD-S1304Y and HL-RP-S1304 on the RadWagon 4, RadCity HS 4, RadRover High Step 5, RadCity Step Thru 3, RadRover Step Thru 1, RadRunner 2, RadRunner 1, RadRunner Plus and RadExpand 5.
Read the US CPSC notice of Nov 24, 2025Want to know if this fits your bike?
Rad External Battery Pack 48 V 14 Ah (legacy 'Standard' pack, seat-tube/downtube rail mount)
RP-1304 / RAD-S1304Y / HL-RP-S1304
- Voltage
- 48 V
- Capacity
- 14 Ah
- Connector
- Rad external rail-mount terminal (bike-side 'battery terminal'), keyed lock
- Safety certification
- Not documented
672 Wh, Samsung 35E 18650 cells (99spokes). The original product page is no longer available. This information is retained from previously published manufacturer material. Part numbers RP-1304 / RAD-S1304Y / HL-RP-S1304 are those cited in the CPSC 2025-11-24 warning covering RadWagon 4, RadCity HS 4, RadRover HS 5, RadCity ST 3, RadRover ST 1, RadRunner 2, RadRunner 1, RadRunner Plus, RadExpand 5. Rad's current official replacements are the Safe Shield external packs.
Fits these bikes
- Physical fitRadRover 5 2020–2021Stock 48 V 14 Ah 672 Wh external pack.99spokes 2020 RadRover 5 spec page · checked Sep 8, 2026
- Physical fitRadRunner 1 2019+Stock 48 V 14 Ah 672 Wh external pack.99spokes 2019/2020 RadRunner spec page · checked Sep 8, 2026
- Physical fitRadRunner 1 PlusStock 48 V 14 Ah 672 Wh 'Locking Removable Seat Tube-Mounted Battery Pack'; CPSC warning lists RadRunner PlusElectric Bike Review RadRunner Plus spec sheet (2020/2021) · checked Sep 8, 2026
- Physical fitRadWagon 4 2019–2024Stock 48 V 14 Ah 672 Wh external pack.99spokes RadWagon 4 spec page · checked Sep 8, 2026
- Physical fitRadCity 4 2020–2022CPSC warning lists RadCity HS 4 among bikes shipped with these external packsCPSC warning 2025-11-24, affected models list · checked Sep 8, 2026
- Physical fitRadMini 4 2020–2022The RadMini 4 uses the same Rad external 48 V 14 Ah pack: Rad's Safe Shield Advanced External page lists the RadMini 4 High-Step as an external-battery model. No published source ties the RP-1304 part number to the RadMini 4 specifically.Rad Safe Shield Advanced External 13Ah product page… · checked Sep 8, 2026
Where to buy
We do not list sellers for a part under a stop-use notice, and the notice itself asks owners not to sell it or give it away.
This original part is no longer available from a known seller.
Compatible replacements — different parts from RP-1304 / RAD-S1304Y / HL-RP-S1304, sold under their own reference:
- VerifiedReplacementAftermarket · Yose PowerYose Power 48 V 14 Ah battery for Rad external-battery models (no charger)
Recorded as fitting 6 of the 6 bikes this part is listed for.
- VerifiedReplacementOEM · Rad Power BikesSafe Shield Advanced External Battery (13 Ah)
Recorded as fitting 5 of the 6 bikes this part is listed for.
Not compatible with RadCity 4 2020–2022.
- ProbableReplacementOEM · Rad Power BikesSafe Shield Basic External Battery (10 Ah)
Recorded as fitting 5 of the 6 bikes this part is listed for, at least one of them not yet verified.
Not compatible with RadCity 4 2020–2022.
- ProbableReplacementAftermarket · FTH PowerFTH Power RAD Power Bikes Replacement Battery 48 V 14 Ah (DC5 charge port) · FTH-RAD-DC5-48-14
Recorded as fitting 4 of the 6 bikes this part is listed for, at least one of them not yet verified.
- ProbableReplacementAftermarket · AmericanElectricAmericanElectric RAD POWER RAD RUNNER Battery Pack 48 V 14 Ah (external)
Recorded as fitting 3 of the 6 bikes this part is listed for, at least one of them not yet verified.