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

2 verified options, 1 likely match, 2 known mismatches. Change part

Compatible — verified

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

Illustration

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

Fits
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

Voltage
48 V
Capacity
14 Ah
Connector
Rad external rail-mount terminal (bike-side 'battery terminal'), keyed lock
UL certified
Not certified

672 Wh, Samsung 35E 18650 cells (99spokes). Original Rad product page (radpowerbikes.com/products/rad-external-battery-pack) now 404 - discontinued. 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

Where to buy

No seller listed yet for this part.

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Did this part work on your bike?

No owner has reported on this one yet.

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 48V 14Ah E-Bike Battery compatible with Rad Runner / Rad Wagon / Rad Mini / Rad Rover 5 / Rad City 4 (external, no charger)

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

Part page

Voltage
48 V
Capacity
14 Ah
Output
10 A
Connector
Rad-style external rail mount (battery mount rail included), 2 keys
UL certified
Not certified

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 · from $372

  • 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.

Probably compatible

FTH lists 'RadCity 4'; same caveat about the mixed compatibility list

Illustration

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

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

Part page

Voltage
48 V
Capacity
14 Ah
Connector
DC5 charge port; Rad external form factor 367.5 x 90.3 x 111 mm
UL certified
Not certified

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 8, 2026 · 0 owners confirmed, 0 reported a problem

Where to buy · from $455

  • FTH Power
    AftermarketUnknown
    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)

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

Part page

Capacity
10 Ah
Connector
External pack, attaches to the bike's battery terminal, lockable/removable with included key
UL certified
Yes (UL 2849 / 2271)

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)

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

Part page

Capacity
12.8 Ah
Connector
External pack, 'attaches to the bike's battery terminal', lockable/removable with included keys
UL certified
Yes (UL 2849 / 2271)

614-634 Wh, 14.87 x 3.79 x 3.57 in, 9.45 lb. Page's 'Nominal Voltage' field read '33V' in the fetch, which is inconsistent with 614-634 Wh at 13 Ah (implies ~48V) - left blank, see openQuestions. 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