Battery for Rad Power Bikes RadCity 4 High-Step (2020-2022, external battery, direct-drive)

1 verified match · 1 with an offer listed in stock · 1 possible match · 2 known mismatches. Change part

1 legacy battery under a US CPSC stop-use warning — shown so you can recognise it, not as an option.

Compatible — verified

Seller lists 'Rad City 4 (and older)'. Note: Rad's own Safe Shield external packs exclude RadCity 4 (direct-drive controller), so this aftermarket claim should be re-checked with the seller

Illustration

Yose Power 48 V 14 Ah battery for Rad external-battery models (no charger)

Bike checked
Rad Power Bikes · RadCity 4 · High-Step (2020-2022, external battery, direct-drive)
Part
BatteryAftermarketYose Power
Reference
No public part number

Part page

Detailsspecifications and connector
Voltage
48 V
Capacity
14 Ah
Output
10 A
Connector
Rad-style external rail mount (battery mount rail included), 2 keys
Safety certification
Not documented

673 Wh, EVE-35E cells. Compatible: 'Rad Runner, Rad Runner Plus, Rad Wagon, Rad Mini, Rad Rover 5 (and older), Rad City 4 (and older)'. Not manufactured or endorsed by Rad Power Bikes. Certifications stated by seller: CE, UKCA, RoHS, UN38.3 Output as stated: 10 continuous / 20 max

Source: Yose Power shop product page, 48V 14Ah battery compatible with Rad Runner/Wagon/Mini/Rover 5/City 4

Last verified Sep 8, 2026 · 0 owners confirmed, 0 reported a problem

Where to buy

In stock from $372 · 1 seller below

  • Yose Power Shop
    AftermarketIn stock
    Checked Sep 8, 2026
    $372
    View offer

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Did this part work on your bike?

No owner has reported on this one yet.

US CPSC safety warning — stop using this battery

It may be physically compatible. That is not the same as being safe to use.

Read the US CPSC notice
Physical fit documented

CPSC warning lists RadCity HS 4 among bikes shipped with these external packs

Illustration

Rad External Battery Pack 48 V 14 Ah (legacy 'Standard' pack, seat-tube/downtube rail mount)

Bike checked
Rad Power Bikes · RadCity 4 · High-Step (2020-2022, external battery, direct-drive)
Part
BatteryOEMRad Power Bikes
Reference
RP-1304 / RAD-S1304Y / HL-RP-S1304

Part page

Detailsspecifications and connector
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.

Source: CPSC warning 2025-11-24, affected models list

Last verified Sep 8, 2026 · 0 owners confirmed, 0 reported a problem

Did this part work on your bike?

No owner has reported on this one yet.

Possible matches — not confirmed for this bike

Probably compatible

FTH lists 'Rad City 4' but dates it 2018-2019 on a bike built 2020-2022, and its list also names semi-integrated models a DC5 external pack cannot fit; voltage, capacity and external format match.

Illustration

FTH Power RAD Power Bikes Replacement Battery 48 V 14 Ah (DC5 charge port)

Bike checked
Rad Power Bikes · RadCity 4 · High-Step (2020-2022, external battery, direct-drive)
Part
BatteryAftermarketFTH Power
Reference
FTH-RAD-DC5-48-14

Part page

Detailsspecifications and connector
Voltage
48 V
Capacity
14 Ah
Connector
DC5 charge port; Rad external form factor 367.5 x 90.3 x 111 mm
Safety certification
Not documented

13S5P Panasonic/LG/Samsung cells, 14 lb, 2-year warranty, charger sold separately (FTH-CHG48DC5). Seller's compatibility list mixes external-battery models (RadCity 4, RadMini 4, RadWagon 4, RadRunner Plus, RadRunner 2, RadExpand 5, RadMission) with semi-integrated models (RadRover 6 Plus ST, RadCity 5 Plus, RadRunner 3 Plus, Radster Trail) - physically one pack cannot fit both, so the list is treated as unreliable.

Connector to check on your bike

  • DC barrel
    5.5 x 2.5 mm · charge port

Schematic of the connector family, drawn by Rankemo — not a photo of this part. Compare the shape and the pin count with the plug on your bike before ordering.

Source: FTH Power RAD Power Bikes Replacement Battery FTH-RAD-DC5-48-14 product page

Last verified Sep 10, 2026 · 0 owners confirmed, 0 reported a problem

Where to buy

Stock availability not confirmed · last recorded price $455

  • FTH Power
    AftermarketStock not confirmed
    Checked Sep 8, 2026
    $455
    View offer

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Did this part work on your bike?

No owner has reported on this one yet.

Looks similar, does not fit

Not compatible

Rad explicitly lists 'RadCity High-Step 4' and 'RadCity Step-Thru 3' as incompatible

Illustration

Safe Shield Basic External Battery (10 Ah)

Bike checked
Rad Power Bikes · RadCity 4 · High-Step (2020-2022, external battery, direct-drive)
Part
BatteryOEMRad Power Bikes
Reference
No public part number

Part page

Detailsspecifications and connector
Capacity
10 Ah
Connector
External pack, attaches to the bike's battery terminal, lockable/removable with included key
Safety certification
UL 2271 (battery pack) — stated by Rad Power Bikes source

480 Wh. 'Recommended replacement battery for the RadTrike and RadMission (legacy)'; 'Compatible as an upgraded battery for 2020 and later ebikes that use an external battery'. 'For ebikes that originally come with a 14Ah battery, range will be ~30% lower'. Incompatible: RadCity Step-Thru 3, RadCity High-Step 4, RadWagon 5, RadRunner Plus (MY2025). Charger sold separately; only updated Rad charger.

Source: Rad Power Bikes Safe Shield Basic External Battery (10 Ah) product page, incompatible list

Last verified Sep 8, 2026 · 0 owners confirmed, 0 reported a problem

Not compatible

Rad explicitly lists 'RadCity 4 High-Step' and 'RadCity 3 Step-Thru' as incompatible with this pack

Illustration

Safe Shield Advanced External Battery (13 Ah)

Bike checked
Rad Power Bikes · RadCity 4 · High-Step (2020-2022, external battery, direct-drive)
Part
BatteryOEMRad Power Bikes
Reference
No public part number

Part page

Detailsspecifications and connector
Capacity
12.8 Ah
Connector
External pack, 'attaches to the bike's battery terminal', lockable/removable with included keys
Safety certification
UL 2271 (battery pack) — stated by Rad Power Bikes source

614–634 Wh, 14.87 x 3.79 x 3.57 in, 9.45 lb. Nominal voltage: not verified. The available sources contain conflicting voltage information. Comes standard on RadRunner (MY2025) and RadRunner Plus (MY2025). Compatible: RadRover 5 High-Step, RadRover 1 Step-Thru, RadWagon 4, RadWagon 5, RadMini 4 High-Step, RadMini 2 Step-Thru, RadExpand 5, RadExpand 5 Plus, RadRunner 1, RadRunner 2, RadRunner (MY2025), RadRunner Plus (MY2019), RadRunner Plus (MY2025), RadMission, RadTrike. Incompatible: Rad models with Semi-Integrated Battery, Rad models produced prior to 2019, RadCity 4 High-Step, RadCity 3 Step-Thru. Requires updated Rad charger. Capacity as stated: 12.8–13.2 Ah

Source: Rad Power Bikes Safe Shield Advanced External Battery (13 Ah) product page, incompatible list

Last verified Sep 8, 2026 · 0 owners confirmed, 0 reported a problem