Difference between revisions of "RAD Mod - External Battery"
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This is a tutorial for an ADVANCED MOD where an external battery is connected, bypassing the onboard battery pack. | This is a tutorial for an ADVANCED MOD where an external battery is connected, bypassing the onboard battery pack. | ||
This modification includes soldering, drilling, and harness building. Previous experience in these areas is recommended/required. | |||
The overall concept is to set up a wiring harness to allow switching between the onboard battery and a larger external battery for greatly extended range and increased performance. | |||
== Pros and Cons == | |||
{| class="wikitable" | |||
!Pros | |||
!Cons | |||
|- | |||
|Allows for customized range | |||
|Warranty is done done done | |||
|- | |||
|More cells in parallel exhibit lower voltage drop and can output more continuous power | |||
|Battery compartment must be opened | |||
|- | |||
|Can be implemented to correct issues with the stock BMS or the stock battery | |||
|Drilling/soldering required | |||
|- | |||
|Nothing hanging out of your charge port. Setup is more robust, less prone to accidental damage. | |||
|Loss of amp measuring and cell voltage (see BMS bypass note) | |||
|- | |||
|Preserves Original Battery | |||
|Loss of cell balancing | |||
|- | |||
|Onboard battery and external battery can be charged through chargeport. | |||
| | |||
|- | |||
|Switch back and forth between onboard battery and external battery for "naked riding" and long range cruising | |||
| | |||
|- | |||
|Bypassing BMS means no accidental shut-offs, regen warnings, and other BMS associated issues | |||
| | |||
|- | |||
|Compatible with all OW versions (different battery pack setups may be necessary for optimal results) | |||
| | |||
|} | |||
Category: [[Category:Mods|Mods]] | == Parts List == | ||
This is meant to be a suggested parts list rather than a specific build of materials. Components can be replaced based on user requirements/preferences. | |||
== Battery Pack == | |||
Similar to the CnR mod or the charging on the go setup, a battery pack must be sourced for this application. The goal here is to match the voltage of the existing battery. | |||
In order to get the full advantage of the RAD mod, it is recommended to use a battery with more than one set of parallel cells. This shares the load between the cells and increases the overall performance (by reducing voltage drop). | |||
Each parallel set of cells is roughly equivalent to 7-miles range, or similar to whatever range you were getting on the OW+ | |||
'''Options:''' | |||
1) LiFePO4 (same chemistry as original battery) Nominal cell range 3.0-3.62v/cell or 48V Empty, 58V full. | |||
Specs: 16s1p or greater. | |||
2) Li-ion (18650 ebike style packs or pouch-style packs) Nominal cell range 3.6v-4.2v/cell or 50.4V Empty, 58.8V full. | |||
Specs: 14s1p or greater | |||
== Charging == | |||
Category: | |||
[[Category:Mods|Mods]] | |||
Revision as of 16:53, 26 May 2018
This is a tutorial for an ADVANCED MOD where an external battery is connected, bypassing the onboard battery pack.
This modification includes soldering, drilling, and harness building. Previous experience in these areas is recommended/required.
The overall concept is to set up a wiring harness to allow switching between the onboard battery and a larger external battery for greatly extended range and increased performance.
Pros and Cons
| Pros | Cons |
|---|---|
| Allows for customized range | Warranty is done done done |
| More cells in parallel exhibit lower voltage drop and can output more continuous power | Battery compartment must be opened |
| Can be implemented to correct issues with the stock BMS or the stock battery | Drilling/soldering required |
| Nothing hanging out of your charge port. Setup is more robust, less prone to accidental damage. | Loss of amp measuring and cell voltage (see BMS bypass note) |
| Preserves Original Battery | Loss of cell balancing |
| Onboard battery and external battery can be charged through chargeport. | |
| Switch back and forth between onboard battery and external battery for "naked riding" and long range cruising | |
| Bypassing BMS means no accidental shut-offs, regen warnings, and other BMS associated issues | |
| Compatible with all OW versions (different battery pack setups may be necessary for optimal results) |
Parts List
This is meant to be a suggested parts list rather than a specific build of materials. Components can be replaced based on user requirements/preferences.
Battery Pack
Similar to the CnR mod or the charging on the go setup, a battery pack must be sourced for this application. The goal here is to match the voltage of the existing battery.
In order to get the full advantage of the RAD mod, it is recommended to use a battery with more than one set of parallel cells. This shares the load between the cells and increases the overall performance (by reducing voltage drop).
Each parallel set of cells is roughly equivalent to 7-miles range, or similar to whatever range you were getting on the OW+
Options:
1) LiFePO4 (same chemistry as original battery) Nominal cell range 3.0-3.62v/cell or 48V Empty, 58V full.
Specs: 16s1p or greater.
2) Li-ion (18650 ebike style packs or pouch-style packs) Nominal cell range 3.6v-4.2v/cell or 50.4V Empty, 58.8V full.
Specs: 14s1p or greater
Charging
Category: